/usr/lib/x86_64-linux-gnu/heimdal/libkadm5srv.so is in heimdal-multidev 1.6~git20120311.dfsg.1-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/heimdal/../libkadm5srv.so.8.0.1