Received suspicious email...

Hello Brothers; I just got the following email from what looks like this site with a .pdf attachment - (I didn't open it) - is this legit??? BTW; it came from the following address: admin@ichiban1.ga
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From: Association of the 1st Battalion 50th Infantry .
Received: Wednesday, August 28, 2019
Pages: 2
This message is being sent from Association of the 1st Battalion 50th Infantry in an encrypted format because it contains particularly sensitive or confidential information. open the attachment by 2019-08-28 02:43 PDT to read your message.
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With all the scams in the internet, I wanted to check to make sure it really came from 1/50. If not - anyone else get this mail ??
Play the game Brothers.... Bob Bihari
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From: Association of the 1st Battalion 50th Infantry .
Received: Wednesday, August 28, 2019
Pages: 2
This message is being sent from Association of the 1st Battalion 50th Infantry in an encrypted format because it contains particularly sensitive or confidential information. open the attachment by 2019-08-28 02:43 PDT to read your message.
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With all the scams in the internet, I wanted to check to make sure it really came from 1/50. If not - anyone else get this mail ??
Play the game Brothers.... Bob Bihari