I disagree about ClamAV in-so-far as its vanilla virus signature database. You really should use some third party ones though you have to be careful since some like specifically malware patrol are way too general. For example, malware patrol will identify any document mentioning any drive.google.com URL a virus.

In regards to MP, I actually submitted the offending signature to MP support and the CSR told said and I quote "Unfortunately that is not a false positive, there is confirmed malware hosted at drive.google.com." It caught my attention because a bunch of READMEs from some github projects and some HTML files ended up in the quarantine. I asked if future signatures would include this general URL since I'm going to blacklist this specific signature and was told basically 'yes, probably'.

I do recommend third parties though and most are free for personal use. Some require a key and therefore some sort of sign up but it isn't terrible except perhaps in regards to where I'm posting, some would consider it so.