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by ziddoap 672 days ago
From the article:

>Specifically, when Common Crawl gets to a pdf, it just stores the first megabyte of information and truncates the rest.

This is where SafeDocs or CC-MAIN-2021-31-PDF-UNTRUNCATED enters the picture. This corpus was originally created by the DARPA SafeDocs program and what it did was refetch all the different pdfs from a snapshot of Common Crawl to have untruncated versions of them.