/usr/share/ is in libapache2-authcassimple-perl 0.10-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/libapache2-authcassimple-perl/
/usr/share/doc/libapache2-authcassimple-perl/examples/
/usr/share/perl5/
/usr/share/perl5/Apache2/
/usr/share/perl5/Apache2/AuthCASSimple.pm
/usr/share/doc/
/usr/share/doc/libapache2-authcassimple-perl/examples/apache_conf/
/usr/share/doc/libapache2-authcassimple-perl/examples/apache_conf/default
/usr/share/doc/libapache2-authcassimple-perl/examples/delete_session_data.pl
/usr/share/doc/libapache2-authcassimple-perl/examples/apache_www/
/usr/share/doc/libapache2-authcassimple-perl/examples/apache_www/index.html
/usr/share/doc/libapache2-authcassimple-perl/copyright
/usr/share/doc/libapache2-authcassimple-perl/changelog.Debian.gz
/usr/share/man/
/usr/share/man/man3/
/usr/share/man/man3/Apache2::AuthCASSimple.3pm.gz