This file is indexed.

/usr/lib/x86_64-linux-gnu/libOTBProjection-6.4.so is in libotb-dev 6.4.0+dfsg-1.

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

It is a symlink to /usr/lib/x86_64-linux-gnu/libOTBProjection-6.4.so.1