Yes. While Cloudinary gives a large focus on images and videos, it does support uploading any file type you wish to manage in the cloud. You can read more about ‘raw’ (or ‘auto’) file uploading here.
Cloudinary also has special support for handling PDFs. Cloudinary allows converting multiple images into a PDF and extracting images from PDF pages. Read more about PDF handling with Cloudinary here.
The following article holds a list of extensions which are restricted on Cloudinary accounts: