/usr/lib/ldap/smbk5pwd.so.0 is in slapd-smbk5pwd 2.4.45+dfsg-1ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ldap/smbk5pwd.so.0.0.0
/usr/lib/ldap/smbk5pwd.so.0.0.0