I need to be able to print just the 8.5x11" area inside of crop marks of a PDF page proof that is 9.6x12.0 inches in size.

I need to be able to print just the area inside of crop marks on a PDF document.

I have page-proof documents sent to me as PDF documents by a publisher.  Each page is 9.6 x 12.0 inches in dimension and has crop marks.  The final content is in an 8.5 x 11-inch area in the middle of the page. 

My printer uses 8.5 x 11-inch paper.  When I print the PDF  at "Actual size" using Adobe Acrobat Pro DC, the result is the upper left part of the proof page, missing part of the right and bottom of the final content while keeping the strips that will be cropped on the left and top of the document.

It seems that the problem could be solved (so that the resulting print would be just the final content inside the crop marks, at 100% scale) if I could specify that the part of the document to be determined based on the center of the document rather than the upper left corner.

How do I do this within Adobe Acrobat Pro DC?