/usr/share/librecad/plugins/libsample.so is in librecad 2.0.9-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/librecad/plugins/../../../lib/librecad/libsample.so
/usr/share/librecad/plugins/../../../lib/librecad/libsample.so