Integrate awesome Security from "Sophos Anti-Virus for Linux Free Edition"
There should be a Scanner for Malware by default.
"Wordpress" already has a super Tool but what about the the other Apps on Server ...
Central Intercept X Advanced for Server
(previously Central Server Protection
We are in 2017 almost 2018 its time to have some sort of fully FREE antivirus on Plesk !
i would love this here is all the info about it. its one of the best out there too . : https://www.sophos.com/en-us/products/free-tools/sophos-antivirus-for-linux.aspx