PDF Injection: When Your Document Viewer Becomes an Attack Surface 📑
IT InstaTunnel Team Published by our engineering team PDF Injection: When Your Document Viewer Becomes an Attack Surface 📑 Introduction: The Hidden Threat in Your Daily Documents PDF files have become the universal language of digital documents. From invoices and receipts to boarding passes and bank statements, we encounter PDFs dozens of times each day. But beneath their seemingly innocent exterior lies a sophisticated attack surface that cybercriminals are increasingly exploiting. PDF injection attacks represent a growing threat that can turn your trusted document viewer into a data exfiltration tool, compromise internal systems, and expose sensitive information without users ever realizing they’ve been attacked. In this comprehensive guide, we’ll explore how attackers embed JavaScript, leverage external references, and exploit form data exfiltration in PDFs, why your invoice generation feature might be leaking internal data to external servers, and most importantly, how to pr...