XSL Formatter Q&A

Yes, you can. Please set the background image, which means the PDF file here, to fo:simple-page-master with background-image as follows.

<fo:simple-page-master background-image="xxx.pdf" 
   background-repeat="no-repeat" ...>

In this case, you should specify background-repeat="no-repeat" (the initial value is "repeat").

Please see "PDF Output" section in the Online Manual in detail.

related matters:
What should I do to put the watermark in the page? [No.2004061502]