Install a PDF writing program that has a "merge" feature, which allows you to create multi-page PDF files. Many free programs are available.

How to Create a Multiple Page PDF. Acrobat Pro, Adobe's native PDF authoring program, contains a feature that allows users to create single and multi-page PDF documents. The ability to create ...

Seems like a straightforward question, but I've not been able to figure it out. I have a Canon MP530 with an auto-document feeder. I've got a couple of magazine articles I'd like to scan to PDF ...

Then open the JPEG file and save it as a PDF to embed it in the PDF format. From here you can import it into a multipage PDF or otherwise manipulate it as a PDF document.