You might be referencing a Creepypasta or an Alternate Reality Game (ARG) involving a mysterious or "cursed" file, similar to famous internet legends like "Smile.jpg."

This query is a bit because it could be interpreted in a few very different ways. Here are the most likely possibilities:

what kind of "solid post" you are looking for and where you plan to share it?

You could be looking for a social media post or forum entry related to the Slipknot song "Snuff" or a specific archive of related media.