/usr/lib/x86_64-linux-gnu/libpythia8tohepmc.so.8 is in libpythia8v5 8.1.86-1.2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libpythia8tohepmc.so.8.1.86
/usr/lib/x86_64-linux-gnu/libpythia8tohepmc.so.8.1.86