This file is indexed.

/usr/lib/x86_64-linux-gnu/libphonon.so is in libphonon-dev 4:4.7.0really4.6.0-0ubuntu1.

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

It is a symlink to /usr/lib/x86_64-linux-gnu/libphonon.so.4