/usr/lib/x86_64-linux-gnu/libxfce4util.so.6 is in libxfce4util6 4.10.1-1ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libxfce4util.so.6.0.0
/usr/lib/x86_64-linux-gnu/libxfce4util.so.6.0.0