/var/lib/ghostscript/CMap/GBT-EUC-V is in cmap-adobe-gb1 0+20090930-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/fonts/cmap/adobe-gb1/GBT-EUC-V
/usr/share/fonts/cmap/adobe-gb1/GBT-EUC-V