This file is indexed.

/usr/lib/x86_64-linux-gnu/libgd.so.3 is in libgd3 2.1.1-4ubuntu0.16.04.11.

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

It is a symlink to /usr/lib/x86_64-linux-gnu/libgd.so.3.0.0