Hi man,
i'm new here and looking for small projects to gather some reviews, therefore, i can offer you a very fair price.
I'd propose using Python in combination with Selenium to scrape the PDFs you require. I gathered experiences with that when i was a developer at the Medical University Vienna, where i used Selenium for automated browser tests, which included tasks like the one you require.
I'll need no more than one day to deliver the Python script and promise excellent code quality.
Let me know if i can help you with your project!
Have a great day,
Jo Bergs