/usr/lib/x86_64-linux-gnu/libhnj.so is in libhyphen-dev 2.8.8-2ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libhyphen.so
/usr/lib/x86_64-linux-gnu/libhyphen.so