/var/lib/ghostscript/CMap/B5pc-UCS2C is in poppler-data 0.4.8-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/poppler/cMap/Adobe-CNS1/B5pc-UCS2C
/usr/share/poppler/cMap/Adobe-CNS1/B5pc-UCS2C