/usr/lib/x86_64-linux-gnu/libLHAPDF.so is in liblhapdf-dev 5.9.1-5.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libLHAPDF.so.0.0.0
/usr/lib/x86_64-linux-gnu/libLHAPDF.so.0.0.0