It looks like you've pasted part of a filename for the 2019 horror mockumentary — specifically an HDRip release (likely from a torrent or file-sharing source).

By telling the audience that watching the film carries a curse, the movie actively weaponizes the viewer's own suggestibility. Every creak in your house or sudden shadow noticed after watching the film is instantly recontextualized by the brain as part of the "Antrum curse." Critical Reception and Cultural Legacy

In this sense, Antrum is a direct descendant of the gimmick films of William Castle, the legendary showman who installed vibrating seats in theaters and took out life insurance policies on audience members to promote his horror movies. As one critic put it, Antrum "wears its heart (and pentagram) on its sleeve and delivers a fun and sometimes emotional film that feels like a throwback to the films of William Castle and his clever gimmicks".

A subsequent screening reportedly led to mass hysteria, a building fire, and multiple casualties.

The film is structured in two parts:

An denotes a file encoded directly from an official high-definition web stream or digital broadcast. Because Antrum relied entirely on a gritty, grainy 1970s aesthetic—complete with artificial film scratches and color degradation—the high-definition digital rip created a fascinating paradox. Viewers were downloading a crisp, modern digital file to watch a movie engineered to look like a cursed, decaying celluloid print.

Antrum focuses heavily on how belief and narrative shape our reality. The audience is told the film is cursed; therefore, they look for curses.