signing a pdf on all 284 pages at once

Hi, I need to sign a 284 page doc on all pages and it would be great if I could do this all at once. I'm sure someone already hade this problem but google wasn't able to help....I have found discussions where someone needs the axact same thing but everyone tells him/her that 1 signature counts for the whole doc, so hear my explanation: 1 had 284 single Doc/Pages an murged them and hoped I could cheat

Answers in German or english are welcome

Stef