look out for:
Vulnerabilities or weaknesses in a website's backend, or its content management system, are exploited by attackers who upload malicious PDF files to the website. These documents, which Edwards calls “poison PDFs,” are designed to show up in search engines and promote “free Fortnite skins,” generators for Roblox’s in-game currency, or cheap streams of Barbie, Oppenheimer, and other popular films. The files are packed with words people may search for on these subjects.
When someone clicks the links in the poison PDFs, they can be pushed through multiple websites, which ultimately direct them to scam landing pages