Acrobat printing blank pages

Many of the files I need to print are file-stamped copies of court documents.  I receive and download them via the internet.  I am able to save them without issue.  When I try to print, the document appears fine in the preview window, but prints as a blank. This has also happened intermittently with documents I have scanned to .pdf on my Fujitsu scanner. Please advise.  I am using version 11.0.07 on a Mac.