Thank you for suppling the Etrecheck Report.
From what is presented in the report >> this computer has been heavily modified and heavy infested with a lot of Adware, Malware plus several really unneeded Application. Some of which are down right dangerous and harmful to the Operating System.
IMHO - the user has three ( 3 ) options
# 1 - Spend a lot of time to remove all the Adware / Malware plus the unneeded and harmful applications. Which may or may not be successful.
# 2 - Do a " Scorch Earth " and Wipe the Drive clean and start with a Clean Installation. Then do Not Use Migration Assist to bring back the Applications and Existing Adware / Malware and harmful Applications. Then, Reinstall only the needed applications Only and Directly from the Apple Apps Store or Directly from the Developer. None of this Bittorrent method as often times these Application can and are infested with Adware / Malware and other unknown elements that harm the computer.
# 3 - Ignore all the above and continue to have a very compromised and infested computer
Q - 1 Unsigned files - There are unsigned software files installed that could be adware and should be reviewed.
A - 1 Seen below for example of the Adware / Malware
Q - 2 -Kernel panics - This system has experienced kernel panics. This could be a sign of hardware failure.
A - 2 - Worth having the computer Evaluated by Find an Apple Authorized Service Provider or Visit a Genius at an Apple Store
Q- 3 - More than one antivirus app - This computer has multiple antivirus apps installed. Antivirus software: Apple, Trusteer, and McAfee
A - 3 - McAfee and Trusteer and totally unneeded and actually compromise the OS.There are no known Windows-like Viruses in the wild that self replicate and affect macOS, because of the underling UNIX Foundation and Permission Limitation.
The Only thing this Antivirus software is protecting is the Bank Account of the Developers and for zero return to the User aside from the problems this software creates. The The Built in Security is all that is required to protect the computer
Q- 4 - System modifications - There are a large number of system modifications running in the background.
A- 4 - Covered in above preamble
Q - 5 qbittorrent.app
Launchd: ~/Library/LaunchAgents/com.bittorrent.uTorrent.plist
Executable: /Applications/uTorrent.app
A - 5 - Covered in Point # 2 Above
Q - 6 Adware:
A- Launchd: ~/Library/LaunchAgents/com.sourcesoftwarehub.AppTech.plist
Executable: ~/Library/Application Support/AppCommon/AppTech --protect
Reason: Adware name match
B - Launchd: ~/Library/LaunchAgents/com.appcart.AppCart.plist
Executable: ~/Library/Application Support/AppPolicy/AppCart -i -c 419964 -isn 944B2502-5026-4128-8FFA-BD7E2F106E4A
Reason: Adware pattern match
C - Launchd: ~/Library/LaunchAgents/com.ReplayInfo.plist
Executable: ~/Library/Application Support/com.ReplayInfo/ReplayInfo
Details: Domain name invalid - possibly adware
D - Launchd: ~/Library/LaunchAgents/com.xBtyL.plist
Executable: ~/Library/qFVGG/rzBmu
Details: Domain name invalid - possibly adware
Q - 7 - Library/LaunchDaemons/com.mackeeper.MacKeeper.MacKeeperPrivilegedHelper.plist
A - 7 - MacKeeper is totally unneeded and actual does harm to the OS. Remove as per Developers Instructions. Take a moment to read some of the harmful effects this application does.
Q - 8 - Launchd: ~/Library/LaunchAgents/com.forpet.plist
Executable: ~/Library/forpet/forpet.app/Contents/MacOS/forpet
A - 8 - Part of your Original Question which maybe one did not know it was even installed
Q - 10 - Launchd: /Library/LaunchDaemons/com.privax.osx.provpn.init.plist
Executable: /Library/Application Support/HmaProVpn/hub/init.s
A - 10 Commercial VPNs should only be used if Mandated by Corporate Head Office for working remotely. Otherwise - ones Privacy and Security touted by the VPN is suspect.
Q - 11 - Launchd: ~/Library/LaunchAgents/com.midafternoon.plist
Executable: ~/Library/midafternoon/midafternoon.app/Contents/MacOS/midafternoon
A - 11 - Part of your Original Question which maybe one did not know it was even installed
Q - 12 - Launchd: ~/Library/LaunchAgents/com.VersionValidation.plist
Executable: ~/Library/VersionValidation/VersionValidation.app/Contents/MacOS/VersionValidation
Details: Domain name invalid - possibly adware
Q - 13 - Launchd: ~/Library/LaunchAgents/com.UddXC.plist
Executable: ~/Library/2NyKc/VME5A
Details: Domain name invalid - possibly adware
Q - 14 - Launchd: ~/Library/LaunchAgents/com.UddXC.plist
Executable: ~/Library/2NyKc/VME5A
Details: Domain name invalid - possibly adware