Xdut | (5).mp4

The filename "xdut (5).mp4" is a generic, system-generated name typically created when a file is downloaded multiple times or renamed by an automated process.

If you found this in a hidden folder, it may be a cached video or an ad from a mobile game or app. How to safely check the content:

Look at your recently used apps. Did you save a video from a group chat or a specific website right before this appeared?

Because this is a private file on your device or cloud storage, I cannot "see" or play the video. However, here is what that specific filename usually indicates: