## Bad AppleSomeone stumbled upon this file in a secure server. What could it mean?file: https://dctf.dragonsec.si/files/230afaac6d3b52b608268829e8aa11d0/Bad_Apple.mp4
## Solution:I downloaded the file and opened and heard some weird sound in the middle. So extracted audio and analysed in sonic vision and added A spectrogram was used to find a QR code.
![image](https://user-images.githubusercontent.com/78896740/118483703-f82f5a00-b733-11eb-9b1e-d2d4637ca63e.png)![image](https://user-images.githubusercontent.com/78896740/118483934-43e20380-b734-11eb-9114-c45f4a2af5c6.png)
converted into black and white and scanned QR code and got the flag.
flag:`dctf{sp3tr0gr4msAreCo0l}`