Service icloud - someone used my Apple ID to login

Hi,

last night i received an email from the next emailadress:

tempikdiscordolaksroelp4@intrnappsctlsaulxca19.com

the email says that my apple id is used to login to iCloud via a web browser. It also says that if it wasn’t me, I have to click on the link in the PDF to change my ID.

my question is: is this a scam or is it really the Apple support desk?