ClamTK/ClamAV found so many threats… What should I do now?
So I did a full scan with ClamTK. I scanned for everything including PUAs using my standard account on Ubuntu. ClamTK found a lot of threats. It could have been a little over a hundred. It showed me a list of results and gave me three options at the bottom: Quarantine, Delete, and Analysis and the it had three columns: File, Status, and Action Taken. The thing is the Quarantine option didn’t seem to do anything most of the time. When I deleted a file it would be marked as deleted in the results window under Action Taken. Anyway, the first half the threats it reported were in

/usr/lib/libreoffice/share/basi…

I didn’t want LibreOffice to stop working so these are the files I tried to quaratine. They had things like PUA.Tool.LibreOffice… in the status

The threats were from three primary sources: LibreOffice system files (I assume), files including js files from webpages I saved on this machine, and old Windows programs I backed up on this computer.

Some of the stuff found:
# In Saved pages:
PUA.Doc.Tool.LibreOfficeMa…
PUA.Html.Trojan.Agent-3707...
PUA.Pdf.Trojan.EmbeddedJavascript…

# In Downloaded Windows apps
PUA.Win.Adware.Slugin-680…
PUA.Win.Downloader.Aiis-68...
PUA.Win.Malware.Speeding…
PUA.Win.Packer.InnoInstaller...

I could go on.

With the LibreOffice files I tried to quarantine all of them but everything else (the files from saved web pages and Windows programs) I deleted.

Where do I go from here? FYI: I was going to set up a dual boot soon and wipe out this hard drive soon with my brother anyway but I don’t know when that will be.

i would hazard a guess with the LibreOffice files
you have "macros" in the Calc ( excel) documents


as to the "old microsoft files" those are likely NOT a false positives

as to " js files from webpages I saved " those ?? Might ?? have malware in them
the web is full of nasty things

ClamAV is also known for false positives , even on a NEW install of a OS there will be some

My calc documents are very simple. I don't even know how to make "Macros." I have one spreadsheet from the web and it doesn't seem too complicated. It's a calculator for how long it would take to finish writing a book. It's from Michael Hyatt and Co and I don't think it's harmful.

I agree with you on those Microsoft programs. They gave me trouble on the XP machine I downloaded them for. One or another compromised that PC running XP in like 2015.

I didn't know ClamAV was known for false positives.
I should add that it marked these files from LibreOffice, saved web pages, and Windows programs as possible threats.