/usr/lib/libmozjs185.so is in libmozjs185-dev 1.8.5-1.0.0-0ubuntu8.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libmozjs185.so.1.0.0
/usr/lib/libmozjs185.so.1.0.0