ClamAV (Clam AntiVirus) is a free anti-virus toolkit that is used for detecting trojans, viruses, malware, and other malicious threats.

• It operates on a signature-based detection method, which means it scans files for patterns that match known malware signatures.
• It is a standard for mail gateway scanning software; it supports almost all mail file formats.
• It can scan within archives and compressed files (also protects against archive bombs), and the built-in support includes Zip, Tar, 7Zip, and Rar among others.

Install ClamAV

https://www.clamav.net/