Since this is a "bootleg," it is technically an unofficial remix.
In the context of music production and DJing, "paper" is not a standard technical term. However, it is often used as slang or a shorthand in specific ways: 🎧 Common Interpretations of "Paper" in Music 1. Paperwork (Licensing & Rights)
Robby Burke (a DJ/Producer known for house and electronic remixes)
If the file came from a promotional pool, the "paper" could be the digital one-sheet or biography of Robby Burke. 3. Slang for Money/Contracts