This phishing message is designed to look like a Purdue IT support ticket and comes with an attachment titled "Login-CAS-Central-authentication-Service.htm
The attachment is web html code that will be opened by your browser and redirect you to a site designed to harvest your login credentials. It is being used as a way to bypass Purdue's systems that block known malicious links in emails.
If you receive this message, please forward it as an attachment to abuse@purdue.edu