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Dec 5: PDF
Challenge
… for fun and profit
It’s in the Chuchichäschtli, not a Chäschüechli !
Solution
The pdf contains an image of a bauble with a QR code on it. It says
1
Oooops !
We see if there are any hidden files in the pdf (e.g. underneath the bauble image). We use http://www.extractpdf.com and find the following files:
We see that the first image was the one visible in the pdf. But it was covering the real QR code in the bauble of the third image. We scan this QR code to get the nugget.
Flag
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