This file is indexed.

/usr/lib/x86_64-linux-gnu/libQt5Gui.so.5.5 is in libqt5gui5 5.5.1+dfsg-16ubuntu7.

This file is owned by root:root, with mode 0o777.

It is a symlink to /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5.5.1