On my workstation with Avast installed the moment I download, copy, or even point at the file it puts it into the chest. I have a copy of the document stored in my gmail outbox, and could probably use a machine without Avast to download and check on that website, but looking at the link you provided makes me think it might actually be a real threat(?).
It's weird because it's a file I created a while back, thinking fall of 2012, and it sat on my external drive undetected until I went to make a backup. It was a cool paper and I just want to read it, which is unfortunate because I'm essentially locked out of my own content. Do you think it's safe to open on a different machine? Or is there a way I can "clean" the file with Avast?