The PDF object, which is a preset List Object, allows you to include pages from a PDF document in your DISE Movie.
Read more: Portable Document Format - wikipedia.org
In the Objects tab, double-click on the PDF icon or click it and draw where you want it on the edit area.
A dialog asking for the PDF document, what pages to render and at what DPI is presented. DISE will create images from the pdf document and add them to a list object. You may later right-click the object and select Edit to edit the specific settings for the list.
Main article: List Object Properties