searching that MD5 at VirusTotal give this
http://www.virustotal.com/file-scan/report.html?id=da7f0fab5c63ec961d4e0ff5980f1173fbd2a2550662f7e71aff1181b49bd3e3-1315394771

looks like it can be a new bug…and i guess avast want it, so you do this with it

Moving files to the Virus Chest
http://support.avast.com/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=501#idt_03

Submitting files from the Virus Chest to avast! Virus Lab
http://support.avast.com/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=501#idt_07