Browser Redirection (Chrome, Safari)

Hi,

So after many research and try, I can't find a solution to that one: there is a malware (adware, virus, trojan, etc...) that is redirecting some pages when I'm browsing in Google Chrome or in Safari. For example, in Chrome, when I try to go to Toyrus.ca, I'm redirected toward that page "http://jljxm.kitchenstop.win/lp/fb8b2497/?n=133820624". Yesterday I was redirected toward Amazon via a "Pureleads" link. On Safari, if I try Insighly.com I'm redirected toward that "https://rep.mysuperappbox.com/offer.html?tp=iw&cid=7062&v=52&gnum=6&clickid=0025 1317p060193941919&cachecode=7LUCNApDMnRHyNbw9-JxZg&q=toyrus&dkw=toyrus.ca&vn=1&e xtid=cdbcbpkdfgfcemelleckgidcpajggamj&yid=28pr&extname=Safe%20Search%20Plus&tid= 149&vc=23&gr=10&c=00251317p060193941919".

So I tried Malwarebyte, my own security suite with Bitdefender, I removed all extension, I checked all installed applications... And nothing works and I can't find anything on my HDD that can explain that problem.

The thing is that redirection problem started on my Windows 7 computer on Chrome and Firefox. So I have the impression it's spreading via sync of accounts or something like that.

And no, I didn't install anything sketchy recently, the only thing that I can think of is an update of Adblock Plus.

Does anyone as the same problem and know how to fix it?

Thanks for your time.