I did it and they deleted it ( a pdf made by me, jdownloader tuturial).
here its digital fingerprint system I found



Digital Middle Fingerprint Sytem V2.42394129847129429

system can detec you from your keyboard
and if they detect you upload movies

here what DMFP system do to you

2 DMFP agents are on duty

AGENT 1



AGENT 2



and FBI's DMFP offical hunter