Using a PDF document analyser it suggests to me that this file might have actually been created earlier than we'd like to think...
Trapped /False
ModDate D:20170306153304+13'00'
CreationDate D:20170306153256+13'00'
Producer Adobe PDF Library 15.0
Creator Adobe InDesign CC 2017 (Macintosh)
D:2017 (year) 03 (month) 06 (day)153304 (hh:mm:ss) +13'00' (GMT +13 = NZ time zone).
The above is based on my assumption that they're using American English regional settings (viz mm/dd) and / or U.S. dictionary (given that they have used the word "oriented" in the text as opposed to "orientated" I think this is entirely plausible).
EDIT: Online resource did okay but using Notepad++ and searching for dates I found creation date:
xmp:CreatorTool="Adobe Photoshop CC 2017 (Macintosh)"
xmp:CreateDate="2017-02-21T15:01:03+13:00"
Seems they've been cooking this up for a while.
Bookmarks