/usr/lib/x86_64-linux-gnu/libgfs3D-1.3.so is in libgfs-dev 20131206+dfsg-18.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libgfs3D-1.3.so.2.0.0
/usr/lib/x86_64-linux-gnu/libgfs3D-1.3.so.2.0.0