UserAgent: Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3100.0 Safari/537.36

Example URL:
http://www.broadband-xp.com/test/chrome/chrome256.pdf

Steps to reproduce the problem:
1. Access to http://www.broadband-xp.com/test/chrome/chrome256.pdf
2. 
3. 

What is the expected behavior?
To view the PDF without any password prompt.

What went wrong?
I see a password prompt. Futhermore, even if I input the right password (= 12345), Chrome PDF Viewer won't open the PDF.

Does it occur on multiple sites: N/A

Is it a problem with a plugin? N/A 

Did this work before? N/A 

Does this work in other browsers? N/A

Chrome version: 60.0.3100.0  Channel: dev
OS Version: 6.3
Flash Version: 

Even if the PDF is encrypted, if it does not have any open password set, Google Chrome should not ask the password.