I haven't had problems prviewing with VLC. Admitedly it can be a little slow to open sometimes.
If you have doubts about the file, then don't downld it. If you can't preview it then you don't know what you might end up with. And that's a long time & effort to find out. I personally wouldn't trust any file named that way. Why would people name files like that in normal circumstances. I believe the name is computer generated.

By the way, may I suggest you investigate some utilities to keep your computer safe.

1. ad-ware http://www.lavasoftusa.com/software/adaware/ (FREE)

2. Spybot - Search & Destroy http://www.safer-networking.org/en/mirrors/index.html (FREE)

3. Peerguardian: http://peerguardian.methlabs.org/pg2.html (FREE)