/usr/lib/x86_64-linux-gnu/libzzipmmapped.so is in libzzip-dev 0.13.62-3+deb8u1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libzzipmmapped-0.so.13.0.62
/usr/lib/x86_64-linux-gnu/libzzipmmapped-0.so.13.0.62