/usr/lib/x86_64-linux-gnu/libpoppler-glib.so is in libpoppler-glib-dev 0.41.0-0ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libpoppler-glib.so.8.7.0
/usr/lib/x86_64-linux-gnu/libpoppler-glib.so.8.7.0