Whenever I run into either of these situations I use an online virus checker so that I can have multiple engines scanning the file to better assure me.
Because they are online you don’t have to install anything which is a good thing.
Here are the best free online virus checkers that I use!
Virus Total – This is the #1 site I go to whenever I need to scan a file for viruses or malware. Currently Virus Total uses around 40 different engines from companies such as Kaspersky, Panda, Prevx, Symantec, Sophos, Trend Micro and more!
The maximum size of the file you can upload is around 20MB.
Jotti – Jotti is another free online virus scan that I use. Jotti uses many of the biggest anti-virus and malware engines out there such as Avast, Kaspersky, NOD32 and AVG.
The maximum file size you can upload to Jotti for scanning is 20MB.