/etc/ghostscript/cidfmap.d/90gs-cjk-resource-japan1.conf is in poppler-data 0.4.7-7.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 | /Japanese-Mincho-Regular << /FileType /TrueType /Path (/usr/share/fonts/truetype/fonts-japanese-mincho.ttf) /SubfontID 0 /CSI [(Japan1) 4] >> ;
/Japanese-Gothic-Regular << /FileType /TrueType /Path (/usr/share/fonts/truetype/fonts-japanese-gothic.ttf) /SubfontID 0 /CSI [(Japan1) 4] >> ;
/Ryumin-Light /Japanese-Mincho-Regular ;
/Adobe-Japan1 /Japanese-Mincho-Regular ;
/HeiseiMin-W3 /Japanese-Mincho-Regular ;
/GothicBBB-Medium /Japanese-Gothic-Regular ;
/Adobe-Japan1-Bold /Japanese-Gothic-Regular ;
/HeiseiKakuGo-W5 /Japanese-Gothic-Regular ;
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