This is the primary danger. Malicious actors often use highly searched "leak" keywords to entice users to download files. While a .txt file is generally safe, these sites often force you to click through "ad-walls" or download "special players" that are actually trojans or spyware. How to Browse Safely
The text file contains the actual URL where the video is hosted. This is done to bypass automated copyright filters that scan for video file extensions like .mp4 or .mov.
Never download an .exe, .bat, or .msi file if you were originally looking for a video or a text document.
If you are following a trail for specific media or archival data, keep these digital safety tips in mind:
Is this related to a specific or archival project ?