You can try to export it from PDF into MS Word (in your pdf file, click File>Export to>Microsoft Word), but I suppose you have already tried that. If not, try. If it won't do the trick, you need to ocr and tidy up the converted file. Obviously, it will take much time. You should ask for a higher rate for that. Let your client choose what they prefer: higher price or their policies. When it comes to policies, usually there are provisions allowing them to disclose information for work purposes. You are not just a curious idler. You do a work for them.

You can try to export it from PDF into MS Word (in your pdf file, click File>Export to>Microsoft Word), but I suppose you have already tried that. If not, try. If it won't do the trick, you need to ocr and tidy up the converted file. Obviously, it will take much time. You should ask for a higher rate for that. Let your client choose what they prefer: higher price or their policies. When it comes to policies, usually there are provisions allowing them to disclose information for work purposes. You are not just a curious idler. You do a work for them.

Thank you very much for your answer, Stepan, I've indeed tried that to no avail. I'll just let the client know that it's impossible to work with PDFs and deliver what they want.