Explanation
The goal of this phishing campaign is to steal Microsoft account credentials.
The phishing mail leads the user to believe that they received PDF documents via the WeTransfer file sharing service from a trusted source. The link in the email does indeed look like a WeTransfer URL, but hovering over it with the mouse reveals that the actual link is associated to another domain, unrelated to the file sharing service.
When clicking the link to retrieve the files, the victim is taken to a page that impersonates WeTransfer.
The victim is given the option to sign in with Microsoft or Outlook. After the choice is made, the credentials are requested which are then sent to the attacker.
Example
