Clear the contents of your Temp folder, instructions:
[ برای مشاهده لینک ، با نام کاربری خود وارد شوید یا ثبت نام کنید ]
and then reboot.
After that, uninstall any recently installed junk > reboot.
After that, uninstall any and all junk toolbars > reboot.
Uninstall/disable any and all junk browser add-ons and extensions and plugins in all of your browsers.
Remove any and all junk search providers in all of your browsers.
What, and why: It is not malware. It is not an illegal trojan, not an illegal virus, not an illegal rootkit.
It is Legal junkware. It is much easier to remove than it is to remove illegal malware. The user downloaded it and installed it. It is legal; it has a eula.
Kaspersky may possibly not detect legal junkware, for legal reasons.
Cause: Caused by someone downloading junk. Junk that is downloaded from download sites comes bundled with more junk. Or: Downloading ok stuff from a download site. Ok stuff that is downloaded from download sites is bundled with junk.
Prevention: Only download ok stuff, and only from the original source, not from a download site.