If this is a niche or emerging internet urban legend, it lacks the broader digital footprint typical of famous "cursed" video files like smile.jpg or barelybreathing.exe . It is possible this name refers to:
Could you provide more context on where you heard about it or any of the video's content? Unilaterale Einführung einer Cash-Flow-Steuer - MADOC
You might be thinking of a different numbered video mystery, such as " 11B-X-1371 " (the plague doctor video) or the "3301" puzzles.