/usr/lib/x86_64-linux-gnu/libheimbase.so.1 is in libheimbase1-heimdal 1.7~git20150920+dfsg-4ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libheimbase.so.1.0.0
/usr/lib/x86_64-linux-gnu/libheimbase.so.1.0.0