Can't open iCloud files on Mac - damaged

I ran the Etrecheck report today:

EtreCheck version: 5.0.6 (5A017)

Report generated: 2018-10-20 12:18:25

Download EtreCheck from https://etrecheck.com

Runtime: 2:08

Performance: Excellent

Problem: No problem - just checking

Major Issues:

Anything that appears on this list needs immediate attention.

Adware - Adware detected.

Unsigned files - There are unsigned software files installed that could be adware and should be reviewed.

Gatekeeper disabled - Gatekeeper security protection is disabled. This computer is at risk of malware infection.

Minor Issues:

These issues do not need immediate attention but they may indicate future problems.

Time Machine auto backup disabled - Time Machine auto backups are disabled.

Configuration profiles present - This machine has configuration profiles. These are sometimes used by adware and malware.

High battery cycle count - Your battery may be losing capacity.

Apps crashing - There have been numerous app crashes.

Apps with heavy CPU usage - There have been numerous cases of apps with heavy CPU usage.

Clean up - There are orphan files that could be removed.

Hardware Information:

MacBook Pro (Retina, 13-inch, Late 2013)

MacBook Pro Model: MacBookPro11,1

1 2,6 GHz Intel Core i5 (i5-4288U) CPU: 2-core

8 GB RAM - Not upgradeable

BANK 0/DIMM0 - 4 GB DDR3 1600 ok

BANK 1/DIMM0 - 4 GB DDR3 1600 ok

Battery: Health = Normal - Cycle count = 918

Video Information:

Intel Iris - VRAM: 1536 MB

Color LCD 2560 x 1600

SMT27A550 1920 x 1080

Drives:

disk0 - APPLE SSD SM0512F 500.28 GB (Solid State - TRIM: Yes)

Internal PCI 5.0 GT/s x2 Serial ATA

disk0s1 - EFI (MS-DOS FAT32) [EFI] 210 MB

disk0s2 [Core Storage Container] 499.42 GB

disk1 - Macintosh HD (Journaled HFS+) 499.05 GB (477.21 GB used)

disk0s3 - Recovery HD (Journaled HFS+) [Recovery] 650 MB

Mounted Volumes:

disk1 - Macintosh HD 499.05 GB (21.58 GB free)

Journaled HFS+

Mount point: /

Network:

Interface en0: Wi-Fi

802.11 a/b/g/n/ac

Proxy Auto Discovery

Interface en3: Bluetooth PAN

Interface bridge0: Thunderbolt Bridge

Interface en4: iPhone

Interface en5: Thunderbolt Ethernet

iCloud Quota: 4.65 GB available

System Software:

macOS Sierra 10.12.6 (16G1036)

Time since boot: About 3 days

Configuration Profiles:

This computer has configuration profiles installed.

Security:

Adware:

Launchd: ~/Library/LaunchAgents/com.spigot.ApplicationManager.plist

Reason: Adware name match

Executable: ~/Library/Application Support/Spigot/ApplicationManager --protect

Unsigned Files:

Launchd: ~/Library/LaunchAgents/com.skype.skype.shareagent.plist

Executable: /Applications/Skype.app/Contents/Library/LaunchServices/com.skype.skype.shareag ent.bundle/Contents/MacOS/com.skype.skype.shareagent

Details: Exact match found in the whitelist - probably OK

Launchd: /Library/LaunchDaemons/com.wdc.WDPrivilegedHelper.plist

Executable: /Library/PrivilegedHelperTools/com.wdc.WDPrivilegedHelper

Details: Exact match found in the whitelist - probably OK

Launchd: /Library/LaunchAgents/com.oracle.java.Java-Updater.plist

Executable: /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Resources/Java Updater.app/Contents/MacOS/Java Updater -bgcheck

Details: Exact match found in the whitelist - probably OK

Launchd: ~/Library/LaunchAgents/com.valvesoftware.steamclean.plist

Executable: ~/Library/Application Support/Steam/SteamApps/steamclean Public

Details: Exact match found in the whitelist - probably OK

Launchd: /Library/LaunchDaemons/com.DuetUSBDaemon.plist

Executable: /Library/Audio/Plug-Ins/HAL/Apogee/DuetUSB/DuetUSBPlugIn.bundle/Contents/MacOS/ duetUSBDaemon

Details: Exact match found in the whitelist - probably OK

Launchd: ~/Library/LaunchAgents/com.bittorrent.uTorrent.plist

Executable: /Applications/uTorrent.app

Launchd: /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Resources/com.oracle.java.Java-Update r.plist

Executable: /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Resources/Java Updater.app/Contents/MacOS/Java Updater -bgcheck

Details: Exact match found in the whitelist - probably OK

Launchd: /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Resources/com.oracle.java.Helper-Tool .plist

Executable: /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Resources/Helper-Tool

Details: Exact match found in the whitelist - probably OK

Launchd: /Library/LaunchDaemons/org.virtualbox.startup.plist

Executable: /Library/Application Support/VirtualBox/LaunchDaemons/VirtualBoxStartup.sh restart

Details: Exact match found in the whitelist - probably OK

Launchd: /Library/LaunchDaemons/com.oracle.java.Helper-Tool.plist

Executable: /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Resources/Helper-Tool

Details: Exact match found in the whitelist - probably OK

Kernel Extensions:

/Library/Application Support/VirtualBox

[Loaded] VBoxDrv.kext (Oracle America, Inc., 5.1.28)

[Loaded] VBoxNetAdp.kext (Oracle America, Inc., 5.1.28)

[Loaded] VBoxNetFlt.kext (Oracle America, Inc., 5.1.28)

[Loaded] VBoxUSB.kext (Oracle America, Inc., 5.1.28)

/Library/Extensions

[Not Loaded] DuetUSBOverideDriver.kext (Apogee Electronics, 1.0.0 - SDK 10.8)

/System/Library/Extensions

[Not Loaded] Pen Tablet.kext (Pen Tablet 5.3.3-3 - SDK 10.8)

System Launch Agents:

System Launch Daemons:

Launch Agents:

Launch Daemons:

User Launch Agents:

User Login Items:

iTunesHelper (? - installed 2017-12-05)

(/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)

TouchDR-C225 (? - installed 2018-08-10)

(/Applications/CaptureOnTouch DR-C225.app/Contents/SharedSupport/TouchDR-C225.app)

iTunesHelper (Apple - installed 2017-12-05)

(/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app/Contents/MacOS/iTunes Helper)

TouchDR-C225 (? - installed 2018-08-10)

(/Applications/CaptureOnTouch DR-C225.app/Contents/SharedSupport/TouchDR-C225.app/Contents/MacOS/TouchDR-C225 )

Internet Plug-ins:

AdobeAAMDetect: 3.0.0.0 (installed 2017-12-15)

FlashPlayer-10.6: 31.0.0.122 (installed 2018-10-09)

QuickTime Plugin: 7.7.3 (installed 2017-12-05)

AdobePDFViewerNPAPI: 15.023.20056 (installed 2017-01-25)

AdobePDFViewer: 15.023.20056 (installed 2017-01-25)

Flash Player: 31.0.0.122 (installed 2018-10-09)

WacomNetscape: 2.1.0-1 (installed 2013-09-03)

Silverlight: 5.1.41212.0 (installed 2016-02-29)

WacomTabletPlugin: WacomTabletPlugin 2.1.0.6 (installed 2016-10-11)

JavaAppletPlugin: Java 8 Update 121 build 13 (installed 2017-10-18)

Safari Extensions:

3rd Party Preference Panes:

Flash Player (installed 2018-09-21)

Java (installed 2016-12-13)

PenTablet (installed 2017-10-24)

Time Machine:

Skip System Files:

Mobile backups: No

Auto backup: No

Volumes being backed up:

Macintosh HD: Disk size: 499.05 GB - Disk used: 477.47 GB

Destinations:

E***************1 [Local] (Last used)

Total size: 1.00 TB

Total number of backups: 8

Oldest backup: 2017-12-05 14:56:05

Last backup: 2018-10-20 09:56:27

Performance:

System Load: 1.84 (1 min ago) 1.82 (5 min ago) 1.82 (15 min ago)

Nominal I/O speed: 0.41 MB/s

File system: 18.78 seconds

Write speed: 383 MB/s

Read speed: 602 MB/s

Top Processes by CPU:

Top Processes by Memory:

Top Processes by Network Use:

Virtual Memory Information:

Software Installs (past 30 days):

Clean up:

~/Library/LaunchAgents/org.virtualbox.vboxwebsrv.plist

/Applications/VirtualBox.app/Contents/MacOS/vboxwebsrv

Executable not found

Diagnostics Information (past 7 days):

2018-10-20 09:41:22 CEPHtmlEngine.app Crash (10 times)

/Applications/Adobe Photoshop CC 2015/Adobe Photoshop CC 2015.app/Contents/MacOS/CEPHtmlEngine.app

2018-10-18 22:12:42 com.apple.WebKit.WebContent CPU

/System/Library/StagedFrameworks/Safari/WebKit.framework/Versions/A/XPCServices/ com.apple.WebKit.WebContent.xpc/Contents/MacOS/com.apple.WebKit.WebContent

2018-10-18 09:03:59 Rhinoceros.app CPU (6 times)

/Applications/Rhinoceros.app

2018-10-16 15:50:36 duetUSBDaemon Crash (8 times)

/Library/Audio/Plug-Ins/HAL/Apogee/DuetUSB/DuetUSBPlugIn.bundle/Contents/MacOS/d uetUSBDaemon

2018-10-16 13:59:19 ApogeePopup.app Crash (3 times)

/Library/Application Support/Apogee/ApogeePopup.bundle/Contents/ApogeePopup.app

End of report

Thank you so much for your answer. I tried both suggestions. I created a new admin user and logged in to iCloud, but the problem still occurred. Couldn't opened the files there either. Then I tried to restart the computer in safe mode, and the same thing happened. So, can still open the files on my phone and on my Mac using the iCloud website, but when I try to open them from the iCloud Drive folder in Finder, the Mac says that they're damaged.

Yeah, I tried that too.

I will probably try this, hopefully it will resolve the problem. But wouldn't such corruption have other symptoms? I haven't really noticed any other problems with my computer.

Yes, I did that the first time I ran the check. Thank you.

Yes, I do, but since it is Apple's Pages- and Numbers-files I'm having issues with, I starting to think that it is the apps themselves malfunctioning in some way.