This file is indexed.

/usr/lib/mozilla-firefox/extensions/{C93FC8A2-2FC7-4DD8-A89D-792159A32799} is in mozilla-nukeimage 0.3-12.

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

It is a symlink to /usr/lib/mozilla-firefox/extensions/../../../share/mozilla-extensions/nukeimage