Are you hosted by or do you have an add on your site for Asperonine or Arvutiosad ? If so ,that is probably built into your site and nothing to worry about..
If not you may need to contact your host or site privider.
That looks like a link frame for one of those sites.(actually I think they are both the
same site.)
To find out what it is ,go to "http://aspiron.ee/" and check out the site.
It's a frame on your site and that is where it gets the file from.(could be the template for your page or mabe a submenu or link.)