PDF Injection Techniques in 2026

The post notes that many traditional PDF injection methods, such as the /Launch action, have been patched through Adobe Acrobat updates. It highlights that modern browsers can open PDFs safely without external programs. The author lists four potential PDF injection techniques: Polyglot attacks, NTLM hash leaking (zero-click), file appending with HTA orchestrators, and Living Off the Land (LotL) methods.