I couldn't find the answer to this question via search. I have a microniche site focusing on instruction manuals for products, and right now I'm hovering about 5% CTR. Each page features the links to the instructions PDF and some troubleshooting to fill up the word count in each article. I was thinking I could possibly get a better CTR and more income if I content locked the PDFs. My question is: Am I able to content lock information I don't own, like those PDFs? Or will I get adsense banned? Similarly, if anyone has a suggestion on how to deal with sites like these I am all ears.