/usr/share/doc/groff-base/pdf/mom-pdf.pdf.gz is in groff 1.22.3-10.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/groff-base/pdf/../examples/mom/mom-pdf.pdf.gz
/usr/share/doc/groff-base/pdf/../examples/mom/mom-pdf.pdf.gz