This file is indexed.

/usr/lib/x86_64-linux-gnu/libisajet758.so is in libisajet758-3-dev 20061220+dfsg3-3.

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

It is a symlink to /usr/lib/x86_64-linux-gnu/libisajet758.so.3_gfortran.2006