If you search YouTube for Kumburgaz (I presume the town the video was shot in) you get a few results.
There is an explanation video by the guy that shot it and someone who I presume a TV host of some sort. Link to video
I watched the explanation video and the one thing that struck me as odd is how they explained that it is “impossible” for the guy’s camera to record small, dim stars. This is after he talks about turning on a filter setting in the camera that enhances low light, which is why you’re able to see the moonlight reflected off the object. Not saying that’s proof its a hoax or anything, just saying its interesting.