Alfresco's Module for Enterprise and Community versions to scan documents using every antivirus engine. Verifying documents with ClamAV, Symantec, McAfee, Sophos, [...] using some mechanisms as sending datastream to a TCP port, execute command with parameters, sending to www.virustotal.com or using ICAP protocol.

Last version: 1.3.1-beta New features:

• ICAP (Internet Content Adaptation Protocol) for scanning many antivirus engines: Symantec, McAfee, Sophos, ...
• Email notify to user and admin in case of infection
• Refactoring, now is AntivirusService

For 4.2.x before versions go to https://code.google.com/p/alfviral/

Alfresco Summit 2013: https://github.com/fegorama/alfviral/blob/master/docs/Alfviral_Alfresco_Summit_2013_v1.pdf