script to search pdf for specific text and add hyperlinks to other documents

I want to create a script or find one someone else has written that searches a 30-40 page pdf for specific text, and links to a specific page of another document. For example, the script would search for this text: "CF, pp NNN" (where CF refers to the other document, and NNN refers to the page number in the other document), then the script would add a hyperlink to that specific page number in that other document.

Obviously, this can be done without a script by adding separate links, but that can be extremely time-consuming when there's hundreds of links to add.

Any thoughts on how to accomplish this?