Q: pop up "Mac Adware Cleaner"

I assume you have adware. Follow the instructions on this web page  in order to manually remove adware from your mac: https://support.apple.com/en-us/HT203987

You may also find adware removal guide on this page http://www.thesafemac.com/arg-identification/

If you do not want to remove adware manually use this anti malware tool in order to scan and remove it: https://www.malwarebytes.org/antimalware/mac/?utm_source=blog&utm_medium=social

Download, open dmg file ,  and run it by clicking “Scan for Adware” button  to remove adware.

  Once done, quit the application  and restart your mac.

Install adblock for your browser: https://adblockplus.org/

You may have installed a fake "utility" called "Advanced Mac Cleaner." Like any software that purports to automatically "clean up" or "speed up" a Mac, it's a scam. To remove it, please take the steps below. Some of the files listed may be absent. Back up all data before proceeding.

If you paid for the software with a credit card, consider reporting the charge to the bank as fraudulent.

Step 1

Triple-click anywhere in the line below on this page to select it:

~/Library/LaunchAgents/com.pcv.hlpramc.plist

Right-click or control-click the highlighted line and select

          Services ▹ Reveal in Finder (or just Reveal)

from the contextual menu.* A folder should open with an item selected. Move the selected item to the Trash. Log out or restart the computer.

*If you don't see the contextual menu item, copy the selected text to the Clipboard by pressing the key combination  command-C. In the Finder, select

          Go ▹ Go to Folder...

from the menu bar and paste into the box that opens by pressing command-V. You may not see what you pasted because a line break is included. Press return.

Step 2

Move the following item to the Trash as in Step 1:

/Library/Application Support/amc

This time you may be prompted for your administrator login password. There's no need to log out after taking this step.

Step 3

Move this item to the Trash:

~/Library/AdvancedMacCleaner

Step 4

Open the Applications folder and move an item named "Advanced Mac Cleaner" (if it's present) to the Trash. Empty the Trash.

On my computer, in the Launch Agents folder, the new file name is:  com.pcv.hlpramcn.plist

I saw it go into the trash, I deleted trash.  But I've done this before.  How the heck does it get on my computer if I didn't download it????