[jl6]

The spec for PDF 1.7 is here: https://www.adobe.com/content/dam/acom/en/devnet/pdf/pdfs/PD...

JavaScript is allowed, but not in PDF/A, which is what I use.

The PDF 2.0 spec is damnably not public.

[the8472]

But you can't easily tell PDF/A and regular PDF apart, so we're back to the same situation as HTML vs. HTML with javascript turned off.