Attached is the "Minor Problems" part of the EtreCheck Report. I am concerned about these files because they were installed about the time I visited the questionable site. I am particularly concerned about the SafariBookmarks entry because I would think that Apple would sign their software.
EtreCheck Report on Unsigned Files
Launchd Files
Launchd script:/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
Status:Not Loaded
Install date:2018-03-28 16:09:49
Details:Exact match found in the whitelist - probably OK
Launchd script:/Library/LaunchDaemons/com.oracle.java.Helper-Tool.plist
Executable:/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Resources/Helper-Tool
Status:Not loaded
Install date:2018-03-28 16:20:20
Details:Exact match found in the whitelist - probably OK
Launchd script:/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
Status:Loaded
Install date:2018-03-28 16:20:20
Details:Exact match found in the whitelist - probably OK
Launchdscript:~/Library/LaunchAgents/com.apple.SafariBookmarksSyncer.plist
Executable:/Applications/Safari.app/Contents/SafariSyncClient.app/Contents/MacOS/SafariSyncClient --sync com.apple.Safari --entitynames com.apple.bookmarks.Bookmark,com.apple.bookmarks.Folder
Status:Loaded
Install date:2011-04-16 19:59:38
Details:Exact match found in the whitelist - probably OK
Launchd script:/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Resources/com.oracle.java.Java-Updater.plist
Executable:/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Resources/Java Updater.app/Contents/MacOS/Java Updater -bgcheck
Status:Loaded
Install date:2018-04-18 09:40:56
Details:Exact match found in the whitelist - probably OK
These files are software that runs in the background and lacks a valid Developer ID signature from Apple. Malicious software like adware will usually be shown here. Unfortunately, legitimate software is sometimes unsigned too. Without a Developer ID signature, EtreCheck cannot tell the difference between legitimate and malicious software. EtreCheck may provide more information in a Details to help you determine if a file is legitimate or malicious.
You can use the Lookup button to research the software on Apple Support Communities. If you have any questions about any unsigned files, ask about them on Apple Support Communities and include your EtreCheck report.
If you are absolutely sure that the file is malicious, click the Remove button to remove it. This App Store version of EtreCheck may be unable to remove some files. You can use the Reveal in Finder and Reveal Executable buttons to manually remove them. Make sure to restart your machine if you remove any files. If you are unsure, please ask for help.
If a file has been incorrectly categorized, click the Report a problem button to have Etresoft review the file.