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corpora/files/CC-MAIN-2021-31-UNSAFE/ sub-dirs:

corpora/files/CC-MAIN-2021-31-UNSAFE/ files:

Name Size Last Modified SHA2-256 SHA3-256 9,479 2024-01-10 14:48:17Z n/a n/a 68,593,579 2024-01-07 01:26:27Z n/a n/a 926,390,908 2024-01-07 01:26:29Z n/a n/a 1,759,211,724 2024-01-07 01:26:38Z n/a n/a


Following the release of the curated CC-MAIN-2021-31-PDF-UNTRUNCATED corpus, this new corpus contains over 5.0 million files collected by a team at NASA’s Jet Propulsion Laboratory (JPL) or synthetically generated by Kudu Dynamics’ “Voice of the Offense” (VoO) team for the Defense Advanced Research Project Agency (DARPA)’s SafeDocs Program.

The common-crawl component of this new corpus (over 3.9 million PDF files as collected by a team at NASA’s Jet Propulsion Laboratory (JPL)) includes some truncated PDF files, as described in the paper “Building a Wide Reach Corpus for Secure Parser Development" by Allison et al slides paper. This component was utilized within the SafeDocs program as the starting point for many generated files, as discussed below, and as the Program’s evaluation corpus, and. was then expanded and improved to become CC-MAIN-2021-31-PDF-UNTRUNCATED.

Why is this corpus "unsafe"?

The corpus contains many files which may cause a parser to segmentation fault (crash), or may cause a parser to hang in an infinite processing loop. There are also many files which will parse differently with different parsers and/or parser options. This will cause issues such as rendering differentials and pdf-to-text differentials when processing these files. At the time of this corpus release, there is no file in the corpus that is known to be malicious or dangerous. However, any file downloaded from the Internet can be dangerous because they may contain viruses, malware, or harmful content that could harm your computer, compromise your personal data, or lead to potential security risks. Therefore, anyone downloading these files should handle them with proper security protocols.

The SafeDocs datasets

This corpus contains file and streaming formats used during the SafeDocs program research, Hackathon, and Evaluation events:





corpora-nitf-01 and corpora-nitf-02

Corpora Structure

The structure of the SafeDocs corpus consists of the following:


This dataset was gathered by a team at NASA’s Jet Propulsion Laboratory (JPL), California Institute of Technology while supporting the Defense Advanced Research Project Agency (DARPA)’s SafeDocs Program. The JPL team included Chris Mattmann (PI), Wayne Burke, Dustin Graf, Tim Allison, Ryan Stonebraker, Mike Milano, Philip Southam, and Anastasia Menshikova.

The JPL and Kudu Dynamics teams collaborated with Peter Wyatt, the Chief Technology Officer of the PDF Association and PI on the SafeDocs program, in the design and documentation of this corpus. The JPL team and PDF Association would like to thank Simson Garfinkel and the Digital Corpora Project for taking ownership of this dataset and publishing it. Our thanks are extended to the Amazon Open Data Sponsorship Program for enabling this large corpus to be free and publicly available as part of the Digital Corpora Project initiative.

Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not constitute or imply its endorsement by the United States Government or the Jet Propulsion Laboratory, California Institute of Technology.

The research was carried out at the NASA (National Aeronautics and Space Administration) Jet Propulsion Laboratory, California Institute of Technology under a contract with the Defense Advanced Research Projects Agency (DARPA) SafeDocs program. Government sponsorship acknowledged.