How to dynamically generate html page from pdf file in php?

Question

CMS

For the first time I encountered such a problem: the initial database of questions for generating tests was prepared in pdf or doc. On the server, you need to pull out blocks of questions with graphics from this file in some (often random) order, equip them with the appropriate identifiers of the correct answer (to check testing) and provide the user with the finished test. Storing graphic images in separate files is inconvenient - this is the main problem. The user prepares a base of questions and answers with copy-paste and most often with the help of graphical selection of information. I need to program such an engine for a site that will use pdf files with a database of questions instead of something-sql . Anyone who has dealt with something like this or has ideas - tell me!