A developer known as Ading2210 has ingeniously created a playable version of Doom (1993) that runs inside a PDF file, aptly named DoomPDF. This project showcases the surprising versatility of the PDF format, which supports JavaScript for interactive features. The game can be played in any Chromium-b...
Part of it was Adobe's shitty security culture for many years. They've done a good job search-washing this away, but many of us remember their previous CEO lashing out at security researchers - as if Adobe being a Cybersecurity laughing stock was some kind of conspiracy.
Part of it is simply that becoming the final word in portable documents required a lot of shenanigans.