This is actually possible, Grey_canary! First though, make sure to turn your Samsung Notes settings into this > Style of new notes > Select Individual pages. Now, here's how to add a page to your PDF:
Once you've imported the PDF, click on the little open book icon at the top of the screen to switch to Reading mode
Select the Sort pages or Page sorter option (if you're using a Tab, it's the icon to the right of the reading mode icon; if you're on a Galaxy phone, click on the More options icon, or the three dots)
Click on the three dots at the bottom of the page (on the sorted pages area), then click Add page
There you go! An easy way to add space for more note-taking on your device! ✍🏻
