/usr/lib/x86_64-linux-gnu/libpynac.so.15 is in libpynac15 0.7.12-2build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libpynac.so.15.0.0
/usr/lib/x86_64-linux-gnu/libpynac.so.15.0.0