Install clamav-unofficial-sigs by entering the following commands in the terminal:
sudo apt update sudo apt install clamav-unofficial-sigs
update script for 3rd-party clamav signatures
This package provides a script for updating the following sources of 3rd-party clamav signatures until freshclamav gains support for such signatures. . The SaneSecurity/OITC signatures provide detection of phishing, spear phishing, fake lottery, ecard malware, casino, fake jobs, fake loans, 419s, fake diplomas, porn, emailed malware and other general spam. . MSRBL signatures provide detection of image spam and general spam. . SecuriteInfo signatures provide various badware signatures, securiteinfo.com honeypot signatures, honeynet.cz signatures and French anti-spam signatures . MalwarePatrol provides detection of mail containing URLs to malware.