Elaborate hoax or the real deal? It's looking like the latter.
Prometheus Movie News is backing up reports from October that Fox was testing a trailer for Ridley Scott's Prometheus, and it's doing so with leaked, murky footage of said trailer. You can watch the snippet RIGHT HERE and see glimpses of Charlize Theron, Michael Fassbender and this shot from the film (which somewhat solidifies that this could be the real deal).
What's this all mean? Well, Fox is probably prepping a holiday promo push to get the film on the radar of audiences as they check out the big releases around Christmas. The film does not open until June 8, 2012.
Enjoy the leaked footage while it lasts until Fox hits that site with a major legal notice.
Source: Prometheus Movie News