Copying pdfs from one module to another

Hi Janet Lynch , and J Welcome to the Canvas Community!

There is no need to copy anything. Once you added a file to that first module, you simply select it from the drop-down to add it to another module.  You can learn more at How do I add assignment types, pages, and files as module items? 

Keep in mind that in Canvas, content does not actually live in the Modules. Rather, the content lives in it's own respective content areas (files are in Files, assignments are in Assignments, etc.), and you are only selecting to display them in Modules for yours and your students' convenience. It is also a best practice that after you have organized your content into the appropriate modules, you then hide those individual content areas to avoid confusing students. So for your example, after you have loaded all the files your students will need into their respective modules, you would then hide the course navigation link to Files.  How do I manage Course Navigation links? 

I hope this helps,

Kelley