/usr/lib/x86_64-linux-gnu/libksba.so.8 is in libksba8 1.3.0-3ubuntu0.14.04.2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libksba.so.8.11.1
/usr/lib/x86_64-linux-gnu/libksba.so.8.11.1