/usr/lib/x86_64-linux-gnu/lib3ds-1.so.3 is in lib3ds-1-3 1.3.0-9+b1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/lib3ds-1.so.3.0.0
/usr/lib/x86_64-linux-gnu/lib3ds-1.so.3.0.0