This file is indexed.

/usr/lib/x86_64-linux-gnu/libplplotqtd.so is in libplplot-dev 5.10.0+dfsg2-0.1ubuntu2.

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

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