Search.cocoshamen.com is a fake search page, namely, a browser hijacker that infects most browsers installed in your MacOS, for example, Safari, Chrome, Mozilla and so on. Outwardly it looks like a legitimate search engine similar to Yahoo or Google. Moreover, the developers claim that Search.cocoshamen.com increases the experience of browsing and significantly increases the search results, but this is a lie.
Videojosmooth.com is a derivative product of adware that is on your system, which came to the PC without your consent. If you notice that the browser is constantly redirected to a Videojosmooth.com website, it means that your computer is infected.
Check-this-out-now.online is another malicious website, which is the consequence of the activity of adware that penetrated your PC. This is a pop-up, in which there is a notification, when accepting which it will constantly display the advertising content in the pop-up, banners and the like, and most often, the content of this advertisement will vary with the content of the visited pages.
Pwieu.com is a malicious page that causes a constant redirection to third-party sites with dubious content. The main goal of this threat is the distribution of advertising content in the form of pop-up ads, banners, coupons and much more.
Umprow.com - is a malware, that is able to redirect you in your browser and display unwanted advertisement. It will also offer to turn on notifications. This malware will cause a redirection to some shady web page with quite suspicious text "If you are 18+ tap Allow". Indeed, it sounds like cheap effort to make a user click the "Allow" button, which will naturally lead to unpleasant consequences like getting more malware and annoying ads on your PC. This is the main reason to remove Umprow.com Pop-ups.