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I got a link of addidas website showing some offers. But when i had a close look, the address have some suspicious difference. www-adidạs-com here 'a' is different. Is this a homograph attack? http://www.adidạs.com/

Ben Druno
  • 51

1 Answers1

2

Yes that's a homograph attack

Unicode Character 'LATIN SMALL LETTER A WITH DOT BELOW' (U+1EA1)

Adidas have no reason to use that character in any of their domains.

Adidas are a German company and the underdot is not used in German.

When part of a hostname contains a non-ASCII character (such as this), the browser converts that element to IDNA encoding. So the actual DNS lookup is www.xn--adids-m11b.com

You can easily check this using wireshark or tcpdump and then clicking your URL http://www.adidạs.com/ in a web-browser.

The real Adidas use content delivery networks, including Akamai, as do many other large organisations

> host www.adidas.com
www.adidas.com is an alias for chinacdn.ev.adidas.edgekey.net.
chinacdn.ev.adidas.edgekey.net is an alias for e2828.a.akamaiedge.net.
e2828.a.akamaiedge.net has address 2.19.150.110

This fake lot don't

> host www.xn--adids-m11b.com
www.xn--adids-m11b.com has address 104.27.180.65
www.xn--adids-m11b.com has address 104.27.181.65
www.xn--adids-m11b.com has IPv6 address 2400:cb00:2048:1::681b:b541
www.xn--adids-m11b.com has IPv6 address 2400:cb00:2048:1::681b:b441

This leads to what is probably some sort of scam or virus dump

> wget -S -O - www.xn--adids-m11b.com 
--2018-02-03 18:21:54--  http://www.xn--adids-m11b.com/
Resolving www.xn--adids-m11b.com... 104.27.180.65, 104.27.181.65, 2400:cb00:2048:1::681b:b541, ...
Connecting to www.xn--adids-m11b.com|104.27.180.65|:80... connected.
HTTP request sent, awaiting response... 
  HTTP/1.1 200 OK
  Date: Sat, 03 Feb 2018 18:21:56 GMT
  Content-Type: text/html
  Transfer-Encoding: chunked
  Connection: keep-alive
  Set-Cookie: __cfduid=de9ae099750b5ca0fa59df2255aefedbd1517682116; expires=Sun, 03-Feb-19 18:21:56 GMT; path=/; domain=.xn--adids-m11b.com; HttpOnly
  Last-Modified: Sat, 03 Feb 2018 14:23:22 GMT
  Accept-Ranges: bytes
  Server: cloudflare
  CF-RAY: 3e7769a9b00c348e-LHR
Length: unspecified [text/html]
Saving to: 'STDOUT'

<script type="text/javascript">
<!--
window.location = "http://xn--adids-m11b.com/shoes/"
//-->
</script>
<!DOCTYPE html>
<head>

<meta property="og:image" content="images/logo.png" />
<meta property="og:title" content="Adidas is giving away 5000 Free Pair of Shoes to celebrate its 93rd anniversary" />
<script src="s4.min.js"></script>
...
RedGrittyBrick
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