This "spoiler trailer" was first noticed by the news website CBR.com. However, the movie is now available on rental basis in YouTube itself.
It's been taken down now, but if you're pretty pissed that you missed this one, don't worry too much because Khali the Killer had some pretty awful reviews, with a score of 3.5/10 on movie database IMDB. For example, Batman V Superman: Dawn of Justice would have been a much more enjoyable watch if the trailer didn't give away the inclusion of Doomsday.
The film stars Richard Cabral (from TV's Lethal Weapon series) and focuses on a hitman in East Los Angeles who decides to take one last job to pay for his grandmother's end-of-life care.