/usr/lib/ is in libnet-z3950-zoom-perl 1.30-1ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/perl5/
/usr/lib/x86_64-linux-gnu/perl5/5.26/
/usr/lib/x86_64-linux-gnu/perl5/5.26/Net/
/usr/lib/x86_64-linux-gnu/perl5/5.26/Net/Z3950/
/usr/lib/x86_64-linux-gnu/perl5/5.26/Net/Z3950/ZOOM.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/Net/Z3950.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/ZOOM.pm
/usr/lib/x86_64-linux-gnu/perl5/5.26/ZOOM.pod
/usr/lib/x86_64-linux-gnu/perl5/5.26/auto/
/usr/lib/x86_64-linux-gnu/perl5/5.26/auto/Net/
/usr/lib/x86_64-linux-gnu/perl5/5.26/auto/Net/Z3950/
/usr/lib/x86_64-linux-gnu/perl5/5.26/auto/Net/Z3950/ZOOM/
/usr/lib/x86_64-linux-gnu/perl5/5.26/auto/Net/Z3950/ZOOM/ZOOM.so