I moved this to MWG as they may know more about it here. I can download from your link OK so it isn't being universally blocked.
I reported this (twice) when one of our users encountered it. Avert whitelisted the binary as the heuristic turned out to be a false positive.
Virus_research_gateway@avertlabs.com is where I reported it.
If that's the first time you've gotten a false from MWG, ... I consider you lucky enough that I'd like to ask you some lottery numbers, jdepriest!
That said, however, I immediately asked the user "why exactly aren't you using free 7-zip.org ? "