Use the Vector Graphics system to design the look of your PDF page, add buttons to control animations, cameras and switch between takes, save multiple pages and also author multiple PDF documents directly in your scene.
Vector Graphics PDF Exporter Information
For animated objects and cameras to work they must all have unique names. It will not work if you use objects, or cameras, with the same names.
All objects must exist in the scene at the first frame on the main take. Any objects that are spawned, or made visible, during animation will not be exported out. To hide objects and make them visible you should use takes. Have all your objects visible in the main take then use a custom take with some of your objects hidden. Then drag and drop the take onto the 3D view to make it the active scene when the PDF is first loaded. Change between takes using buttons by dragging and dropping the new takes onto them. You can then press the buttons in the PDF to change between takes and thereby changing the visibility of the objects.
Animations only work for objects with a single material on them.
For further information be sure to check out the official help documentation.