And PLEASE do not rely on Virustotal for verifying that a file is safe. If VT says it's bad then it's highly likely bad. If VT detects nothing it does not mean the file is clean. It means that none of the antivirus engines on VT detected anything bad. It is not that difficult to fool antivirus software.

I would also upload the file to someplace like https://malwr.com/submission/ or http://www.threatexpert.com/submit.aspx to see if anything malicious is detected.