"Killers of the Flower Moon" is an Apple Original Film. For the highest quality viewing experience—including 4K resolution, Dolby Vision, and Dolby Atmos—the film is available through official channels:
Here is that article.
However, I'd be happy to help with something else related to this film — for example: Download - 1337xHD.Vip-Killers of the Flower M...
When assessing a legitimate-looking release, look for: "Killers of the Flower Moon" is an Apple Original Film