1) I opened the PDF and then did a search for my SSN and my Wife's SSN.
2) use the PDF drawing pen and set it to black and as thick as it can get.
3) mark through each SSN. (at this point, you can still search and find all the SSNs behind the mark-outs)
4) save to a new PDF file.
5) Print if desired
**Note, you cannot email this PDF to someone (e.g. financial planner), because someone could then use the PDF eraser tool to see your SSN (say an evil person intercepted your email). So, what you do before emailing is to print to a new PDF file. That will prevent the eraser tool from being used. Now you can email (or print).
(In this printed-to-PDF version, you cannot use the search tool to find SSN or any other content).
*this was all done by opening the original PDF in MS Edge browser. Having the Acrobat reader should work as well.
