Learn practical techniques for analyzing PDF documents to detect tampering, alterations, and fabrications in this 29-minute conference presentation from DFIR Prague 2025. Discover how digital forensic investigators use metadata analysis and digital clues to distinguish authentic PDF documents from forged ones. Master open-source tools and methodologies essential for fraud detection, compliance audits, and legal document verification. Explore the forensic examination process for identifying non-original documents and understand how to apply these skills in real-world scenarios involving cybercrime investigations and digital forensics incident response.