/usr/share/fonts/cmap/adobe-cns1 is in poppler-data 0.4.7-7.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/fonts/cmap/../../poppler/cMap/Adobe-CNS1
/usr/share/fonts/cmap/../../poppler/cMap/Adobe-CNS1