Are you trying to hack my website? I believe not, must have been an honnest mistake!
Have to wonder though why you specifically typed in that url. Yes i am using wordpress but the site is updated according wordpress recommendations. Please go away.
What Is Xmlrpc.php?
XML-RPC is a feature of WordPress that enables data to be transmitted, with HTTP acting as the transport mechanism and XML as the encoding mechanism. Since WordPress isn’t a self-enclosed system and occasionally needs to communicate with other systems, this was sought to handle that job.
For example, let’s say you wanted to post to your site from your mobile device since your computer was nowhere nearby. You could use the remote access feature enabled by xmlrpc.php to do just that.
The core features that xmlrpc.php enabled were allowing you to connect to your site via smartphone, implementing trackbacks and pingbacks from other sites, and some functions associated with the Jetpack plugin.
In other words, this functionnality is a magnet for hackers!