/usr/lib/x86_64-linux-gnu/libsmltk.so.0 is in libsmltk0 3.4.0.47.5-0ubuntu3~gcc5.2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libsmltk.so.0.6.0
/usr/lib/x86_64-linux-gnu/libsmltk.so.0.6.0