/usr/lib/x86_64-linux-gnu/libQt5Contacts.so.5 is in libqt5contacts5 5.0~git20140515~29475884-0ubuntu20.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libQt5Contacts.so.5.0.0