I was searching for android game, then when I click on a link in yahoo search, I got a redirect to unknown site (htxp://s.click.aliexpress.com/e/yzyune6b/).
Again as always an interesting issue you come up with. I went over the code and found the following at a first glance skimming over this.
The redirect is for an unknown site, well it belongs to the richest man in China actually, the guy that owns AliBaba aka aliexpress dot com . uMatrix has blocked the tracking there from htxp://dmtracking2.alibaba.com.
App from: android-app://com.alibaba.aliexpresshd/aliexpress/deeplink/home/www/en
while Quixey search made a deal with AliBaba to better reach out to 100 million Chinese users.
For htxp://js/6v/lib/gallery/jquery/jquery.js%22&&/%5Ehttps?://[^/]+.alibaba.com//.test(location.href)===!1&&(e.exports.securityDebug=!0)}),delete%20seajs._atom - this could be leading to a Pua.Lolipop infection, normally detected by Avast as Win32:PUP-gen [PUP]. So adware for you there! Did you get an Avast PUP warning or do you not have PUP scanning activated, as it is off by default.
With Firefox, I use Yahoo search in preference to Google, clicking on search links often end up going through two or more URLs to get to the intended URL.
Often these are going through affiliates and click tracking, etc. to get monetary gain. The main thing here with Firefox all of these redirections stop awaiting my input at any point the user can close the tab if they don’t want to proceed. But in most cases I let it go through.
Also with firefox if it is a bad site it should block it (safe browsing), I also use WOT and that also can block access to a bad site.
Now I found not only the hidden Iframe redirect in htxp://play.hotandroidgames.com,but there is also the following phishing content as shown in this urlquery scan: http://urlquery.net/report.php?id=1439641361693