, we have no real evidence either way
Dude. Really. Those are known actours on that movie, with producers and production team, and whanot. You can look it up. They made it for, like, 300,000 bucks, and it earned them serious amounts of millions. Good deal.

Anyway, it's not even TRYING to be a real. It's a scary movie like any other. Except it's not scary.