Russian-language URL shortening service from Vk.io

Russian-language URL shortening service from Vk.io

10.Oct.2021

Yesterday popular link shortener service vk.io (aka vkontakte.ru/short) started to spread russian language spam messages with malicious links redirecting to blackhole exploit kit landing page:

So as you can see, cyber crooks put a lot of effort in this campaign and they are pushing quite big volume of traffic from some very effective sources via ad networks. In order to redirect users from Ad network domains, crooks have been using 302 permanent redirects only so far, but there is still a possibility that they will start to use JavaScript instead on redirection stage or something else  more sophisticated if they find it necessary for more effective infections rate.

  As mentioned above, this adnetwork is using pretty aggressive approach by injecting malicious javascript in iframe. If you have the same problem with being redirected to blackhole exploit kit pages when clicking on safe looking site, please mention it in comments section so that I update this article accordingly. Please also read about how to protect yourself from malvertising . Also remember, that many of the ad networks are working together in order to increase their traffic numbers and thus earning so if one of them is compromised your computer can be infected even when visiting websites not displaying ads or using different ad-serving network.

Date: Thu, 23 Aug 2012 11:03:36 +0400

From: Vkontakte - Team <po[email protected]>

Subject [SPAM] vkontakte.ru/short

Hello!

You are receiving this message because you visited the following page: http://x5sowjdyjycaj5u3.top/26-02-10-pricelist.html   The URL redirected to another URL, which was used for spreading spam. We apologize for any inconvenience caused by this issue. Learn how to avoid it in future HERE . Kind regards, Vkontakte - Team www.vkontakte.ru/short url: [email protected] [email protected] phone: +7 (495) 663-49-20

NOTES & REFERENCES

This spam campaign is just an example of how big and wide this problem became, so always double check links before clicking on them. If you have been redirected to blackhole exploit kit pages from other ad networks as well, please leave a comment below so I can update the article accordingly. It seems that crooks also use JavaScript redirections to infect users with malware or send them to affiliate marketing bribe pages in order to increase their traffic numbers - it's a very sophisticated approach which requires more research if we want to do something about it... Meanwhile, I would recommend you to install NoScript for Firefox . Please let me know if this short url service is also actively used by other blackhat SEO'ers or script kiddies who like to use shortened links for redirecting people. I think this is very unlikely, but still...

This entry was posted in Malware and tagged Blackhole 2.0 , exploit kit , Redirect . Bookmark the permalink .

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