Secure PDF Viewer Plugin…

Just wondering, and hopefully this isn’t something that only I would think of, ha; but is there a PDF plugin that includes \ embeds a document on your site that doesn’t download if you click on it? (Or doesn’t even have that option for someone to do.)

Which is to say; say you just want someone to read a PDF document on your site but not be able to download it, at least easily, does that exist? Let me know if that makes sense and thank you for the help!