DPRK Tech DPRK Technology Research Database Twitter Github Dumping Decrypted Documents from a North Korean PDF Reader 16 Nov 2018 Author: Niklaus Schiess (@_takeshix) Mirror: PDF The initial publication of the watermarking mechanism was published in the following blog: https://insinuator.net/2018/11/dumping-decrypted-documents-from-a-north-korean-pdf-reader/