TestComplete should have come with PDF content valiation. Right now we are using pdfbox to extract the content but it is not giving us in the correct layout. It can't be used for anytype of validatio...
I ask this because you should be able to generate an image from pdfbox and, if you make your test deterministic, you should receive the same image each time which you can then compare with TestComplete. I have done this many times myself and it works well.