An easy antivirus audit can be performed here :
The Anti-Virus or Anti-Malware test file (European Institute of Computer Anti-virus Research).
This test file has been provided to EICAR for distribution as the "EICAR Standard Anti-Virus Test File", and it satisfies all the criteria listed above.
It is safe to pass around, because it is not a virus, and does not include any fragments of viral code. Most products react to it as if it were a virus (though they typically report it with an obvious name, such as "EICAR-AV-Test"). The file is a legitimate DOS program, and produces sensible results when run (it prints the message "EICAR-STANDARD-ANTIVIRUS-TEST-FILE!").
Once downloaded run your AV scanner. It should detect at least the file "eicar.com". Good scanners will detect the 'virus' in the single zip ARCHIVEe and may be even in the double zip ARCHIVEe. Once detected the scanner might not allow you any access to the file(s) anymore. You might not even be allowed by the scanner to delete these files. This is caused by the scanner which puts the file into quarantaine. The test file will be treated just like any other real virus infected file.