> its own PDF engine, built from scratch Just be careful, many larger teams have taken on that PDF spec, and it has not ended well for them: https://nvd.nist.g

> its own PDF engine, built from scratch Just be careful, many larger teams have taken on that PDF spec, and it has not ended well for them: https://nvd.nist.gov/vuln/search/results?form_type=Basic&results_type=overview&query=pdf&search_type=all https://nvd.nist.gov/vuln/search/results?form_type=Basic&res... and it seems to be one of the main actors in what are termed "polyglot" files: https://truepolyglot.hackade.org/ https://truepolyglot.hackade.org/ (of which my favorite is: https://news.ycombinator.com/item?id=18344778 https://news.ycombinator.com/item?id=18344778 0x15 is a laser-projectable PDF that's also a ZIP containing, among other things, another PDF that is also a Git repo of its own source code. )