[greyface-]

  $ wget https://bitcoin.org/bitcoin.pdf
  [...]
  $ openssl sha256 bitcoin.pdf 
  SHA256(bitcoin.pdf)= b1674191a88ec5cdd733e4240a81803105dc412d6c6708d53ab94fc248f4f553
  $ openssl sha256 /System/Library/Image\ Capture/Devices/VirtualScanner.app/Contents/Resources/simpledoc.pdf
  SHA256(/System/Library/Image Capture/Devices/VirtualScanner.app/Contents/Resources/simpledoc.pdf)= b1674191a88ec5cdd733e4240a81803105dc412d6c6708d53ab94fc248f4f553

(Ventura 13.3)

[birdyrooster]

and a universal hash collision attack!? this is amazing stuff from apple

[eru]

They'd also need great compression to put more inside the pdf.