/usr/lib/libxmlrpc_cpp.so is in libxmlrpc-c++4-dev 1.16.33-3.1ubuntu5.2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libxmlrpc_cpp.so.4
/usr/lib/libxmlrpc_cpp.so.4