A PDF or a word document are standalone files. You can offer them to viewers as links to that document via the proceedure below. If you want to display the contents of a PDF or document with in your website then you need to cop the contents or recreate the contents of these documents into a web page using the content editor.
Linking to a PDF or other document.
Create a link with in your web page via the content editor.
From the link options select"Attach a new file/PDF/Word/etc"
Then select the PDF or document you want to upload to the server.