There are lots of different pdf handling tools available for Linux. All sorts of stuff with ghostscript and other projects that is designed to manipulate and convert data between different formats.

German academics have developed a new attack that can extract and steal data from encrypted PDF files, sometimes without user interaction. Named PDFex, the new attack comes in two variations and ...

Leading PDF library company iText Software today launched pdf2Data, which allows users to easily extract and access data from PDF documents.