How to Remove Alwaysnewsoft.traffic-portal.net Pop-up Completely And Safely?

Victim: "I accidentally infected my Mac Pro with the "alwaysnewsoft" dot "traffic-portal" dot "net" adware/malware, which blocks me from using Safari unless I click OK on an alert that I'm not willing to touch. Does anybody know how to remove it? Googling the issue only turns up Windows solutions, and almost all of them are from apparently shady malware removal companies."

What is Alwaysnewsoft.traffic-portal.net?

Alwaysnewsoft.traffic-portal.net is a suspected domain that is able to cause browser redirects. The redirects may lead to ad-supported or online shopping sites, potentially malicious and phishing sites. It can affect your popular browsers including Internet Explorer, Mozilla Firefox and Google Chrome. You should never take it slightly.