I receive emails from friends that only offer one single link and are not actually from my friend and these emails are scams.
You should be aware of these types of scams and also alert your family and friends to help them avoid having their computer infected with a virus that sends emails to all of the people in your email address book.
When you receive emails with one link only and you see that it looks like your friend sent the same email to a bunch of other people, do not open or click on the link. Delete the email and warn your friend about the email.
You will need to start a new email when you warn your friend about the email you received. Do not reply to the email that was sent to you.
Tell your friend to change their password of their email account first thing and to call a computer geek to help remove any unwanted viruses or malware.