There is this youtube channel called I Hate Everything in which, among other things, this youtuber reviews Imdb's 100 lowest ranked movies in search for the worst movie: https://www.youtube.com/playlist?list=PLxOKy-G3phBomkGrPJuQwUawQmS_1ysNN
In one of such movie reviwes he points out that the budget was way too much for a movie that basically looked like it was recorded with an average hand-held camera, terrible actors and no movie sets whatsoever (one part of the movie was apparently recorded with an hidden camera at a real hospital with real, seemigly oblivious people instead of a movie set and extras).
This youtuber comments that it seems unlikely that such a terrible and lazy movie could have had such a big budget, and that it seemed like some sort of money laundering scheme (this company has more movies of similar "quality").
My question is, how does someone exactly launder money by making terrible movies and lying about the budget?