A case study in PDF forensics: The Epstein PDFs
This article details a PDF forensics case study on a small, random selection of the Epstein PDF files released by the US Department of Justice (DoJ). The tranche contains 4,085 PDF files, with an estimated 5,879 remaining unreleased. Key findings include:
- A difference in PDF version reporting between forensic tools.
- The presence of two incremental updates.
- The discovery of a hidden (orphaned) document information dictionary revealing the software used in processing.
- The DoJ avoided JPEG images to prevent metadata leakage.
- Overall, the DoJ’s sanitization workflow could be improved to reduce file size and information leakage.
A case study in PDF forensics: The Epstein PDFs
This article details a PDF forensics case study on a small, random selection of the Epstein PDF files released by the US Department of Justice (DoJ). The tranche contains 4,085 PDF files, with an estimated 5,879 remaining unreleased. Key findings include:
- A difference in PDF version reporting between forensic tools.
- The presence of two incremental updates.
- The discovery of a hidden (orphaned) document information dictionary revealing the software used in processing.
- The DoJ avoided JPEG images to prevent metadata leakage.
- Overall, the DoJ’s sanitization workflow could be improved to reduce file size and information leakage.
Software Supporting PDF/UA
Longtime chairman of the US Committee for PDF/UA, Duff Johnson maintains a page listing software providing PDF/UA functionality as well as an updated history of PDF/UA.
January 2014 by PDF Association staff
Accessibility isn’t easy. For implementers and product managers alike who are responsible for supporting accessibility in PDF, this article describes … Read more
February 2013 by PDF Association staff
Where did PDF/A come from?
January 2012 by Duff Johnson
The twice-annual PDF Standards Week for the winter of 2011-2012 was hosted by Microsoft in their Bravern facility in Bellevue, … Read more
August 2011 by PDF Association staff
The Isartor test suite is available from pdfa.org free of charge. It can be used to check PDF validation software … Read more
May 2011 by 100th German Library Day Steps into the Future with PDF/A
More than 3,000 librarians from all provinces will exchange experiences and learn about new trends and developments in librarianship, including … Read more
