/var/lib/ghostscript/CMap/UCS2-GBK-EUC is in poppler-data 0.4.6-4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/poppler/cMap/Adobe-GB1/UCS2-GBK-EUC
/usr/share/poppler/cMap/Adobe-GB1/UCS2-GBK-EUC