I've job offer it is real or fake?

I've got recently job offer from American Hospital Abu Dhabi UAE.
I already completed online interview and I've got official Appointment Letter and Benefit package(PDF file)

I am really really wondering if this hospital is really exist or not.

Actually I made a call, the number provided at official website, but nobody answered but disconnected. 

Please give me your precious opinion.

What's the name of the American Hospital?

The full name is "American Hospital Abudhabi"
ahabudhabi.com

"American Hospital abudhabi"
Webpage ahabudhabi.com

Looks like fake..., Im living in abudhabi for last 6 years. never heard of this hospital. the contact number given in the web site is a mobile number(+(971) 553-5 77-268) i dialed it and its not working, Usually all hospital numbers are land line number and emergency reception number given is dubai number (Emergency Reception: +(971-4)-377-6645), abu dhabi numbers start with (+9712) . Don't ever deposit r send money if you r asked to do so. try to check again with UAE embassy in your country whether such hospital is in function.

Thank you so much.~

Definitely fake, sorry :(