Are you trying to , or are you looking to write a story based on this file?
If you're using it to strike up a conversation about internet mysteries, users on Quora and Reddit suggest being direct and confident. You might try:
"Have you seen the deep dive on 28871mp4? I can’t tell if it’s a genius ARG or actually real."
If you are looking for a description or a "creepypasta" style summary of the file:
If you want to send a text that matches the mysterious vibe of the topic:
"Just went down a rabbit hole for 28871mp4. My brain is officially fried. What's the weirdest internet mystery you've ever found?"
