I received an email for a job and there were links in this email for testing. A URL on the website (pdf file) comes up as a threat and Avast blocked it. I have researched this a little bit and some people say it’s ok anyway. I do not believe this necessarily. I also read they can be blacklisted, but do not know what this means pertaining to a link. Could someone help me here? I can send a screen shot of what it says if needed.