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[Attacker Node] ---> (Submits Malicious URL) ---> [PDFy Web Server] ---> (Fetches Page via wkhtmltopdf) ---> [Attacker's Exploitation Server (302 Redirect)] ---> [Internal System Files (file:///)] pdfy htb writeup upd
Create a PHP file (e.g., exploit.php ) on an external server or a listening platform controlled by you. The code instructs any visiting client—including the vulnerable wkhtmltopdf binary—to look directly at a local file path: This public link is valid for 7 days
Use exiftool on the generated PNG: