Dm4dub_hd.mp4

: Start with the curiosity factor. "If you see a file named dm4dub_HD.mp4 in your DMs, don't press play unless your volume is at zero."

: Mention how the file often bypasses certain auto-play filters by using specific encoding or being masked as a different file type until opened. dm4dub_HD.mp4

: The "HD" in the filename is used as bait to make users think they are downloading or viewing a high-quality edit or a leaked movie file. : Start with the curiosity factor

Depending on where you are posting (e.g., a "History of Memes" thread or a tech-safety blog), you can use this outline: you can use this outline: