PUA.Packed.UPack aka Win32:OnLineGames-DQS as avast names it, comes in many variants…
A recent variant was scanned here: http://wepawet.iseclab.org/view.php?hash=04d31d2b35383178fdb5db6f5f316e5c&t=1303642606&type=js and found there to be suspicious
VT results: http://www.virustotal.com/latest-report.html?resource=b7fc404553cf16c7dffb95d75db946a7
a similar malware was reported here:
ThreatExpert report: http://www.threatexpert.com/report.aspx?md5=54ae61d01b2d17250db76c2df593ffc3
This could also be a False Positive flagged heuristacally because it is open source,
the software can be OK when it originates from the author of the software,
polonus