Briefly on this infection
Search.pensirot.com is a rather questionable site, endorsed by a hijacker. The intruders need your permission to come into your computer and they get it without you even knowing. They get in along with freeware if you really need to employ the freeware, the only other way to stop their installation is to deselect them during free software installation. The hijacker won’t damage your device directly, but it will change your browser’s settings and try to redirect you to sponsored pages. The reason it even exists is it wants to redirect you to promoted web pages in order create pay-per-click profit. If you aren’t attentive, you may end up with malware because while the intruder is not damaging itself, you could easily be rerouted to dangerous pages. So what we recommend you do is proceed with Search.pensirot.com eradication.