/usr/lib/x86_64-linux-gnu/libperl.so is in libperl-dev 5.20.2-3+deb8u11.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libperl.so.5.20
/usr/lib/x86_64-linux-gnu/libperl.so.5.20