Differentia.ru/diff.php is equipped with an ads-supported function, also known as adware. It is designed to target as Windows systems such as Windows XP/ Vista/7/ 8. After it slips into your PC, it will first show a great number of pop-ups, banners, and links in your browser like Internet Explorer, Yahoo, Google Chrome, Mozilla Firefox, and safari.
Usually, you get it via free download and bundling. On the one hand, it can come with freeware and shareware due to it is in a position to become an attachment. On the other hand, it really can bundle with sponsored ads, intrusive website, malicious links, and other unexpected program. According to that, it is easy to infect this adware if you get in touch with them. I hope you can keep a distance away them, and decrease the risk and possibility of infecting it and the similar adware.