We recommend! Dr.Web anti-virus link checker is a Firefox extension that will check a link for viruses using the online version of the Dr.Web anti-virus.
It very easy to use, It can detect Mass-mailing worms, E-mail viruses, Peer-to-peer viruses, Internet worms, File viruses, Trojans, Stealth viruses, Polymorphic viruses, Bodiless viruses, Macro viruses, MS Office viruses, Script viruses, Spyware, Spybots, Password stealers, Paid Dialers, Adware, Riskware, Hacktools, Backdoors, Keyloggers, Joke programs, Malicious scripts, and other malware.
After installing this extension you will notice that the ‘Scan with Dr. Web’ item has been added to your context menu.
You can download Dr.Web anti-virus link checker – FireFox Extension from here
Nice find, this should be useful for accessing suspicious attachments and files.