/usr/lib/x86_64-linux-gnu/libxmltooling.so.7 is in libxmltooling7 1.6.4-1ubuntu2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libxmltooling.so.7.0.4
/usr/lib/x86_64-linux-gnu/libxmltooling.so.7.0.4