Amazon Prime member? WARNING!

I have an Amazon account AND an Amazon Prime membership.
I received an email and I want to show it in a screen shot:

On first glance nothing really alarming, right?
BUT:
The sender email address (labeled From:) looks to me totally wacky and the Reply-To address (labeled To:) IMHO is equally unlikely.
The warning bells in my mind started to ring loud and clear.
 
My wife and I use the same Amazon account all the time and thus I know that the payment method is correct and that it works.

Even saving the attached PDF document to my computer and then scanning it with Malwarebytes did not show any alarms or warnings.

So I opened the file in my PDF reader to check it out in more detail.

The PDF document contains a link and a BIG button to supposedly go to Amazon's account and payment method web page.

BUT this is what the link and the button actually would have sent my web browser to:
https://t.umblr.com/redirect?z=https%3A%2F%2Fam1zn-updtaeinfmtaonsupdtee-verifyconfimationss76757855.com%2F%3Fsigninn-&t=NmVmZTU1YjdlNTBkODkzYjc0NTg1NzM0MTI2YWNhNWJkOGNiZGRjZSxjYTVkNGQyNzY5ZjI4OGQ2OGFiZjQ2ZDJmOTg3NjZlMTZkNTI5M2Y3

What a crazy nightmare - and for me a clear indicator that something was VERY WRONG!

I went to Amazon.com and checked in my account settings and voila, my Prime membership is paid for until September and the payment information is correct.

Naturally I will report this to Amazon.

MY conclusion as far it concerns you? 
 
Be super vigilant, never trust an email and do NOT be complacent!

Yes, IMHO it is complacent to "just click" on the big button or the link in the PDF file rather than verifying the claim made in the PDF file independent of the email and it's attachment!

Stay safe, stay vigilant and pay attention to the details!