/usr/lib/x86_64-linux-gnu/libsmime3.so.1d is in libnss3-1d 2:3.26.2-0ubuntu0.12.04.1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libsmime3.so
/usr/lib/x86_64-linux-gnu/libsmime3.so