I used grep on the text and found the flag.
```shell
❯ grep -i "pico" anthem.flag.txt
we think that the men of picoCTF{gr3p_15_@w3s0m3_58f5c024}
```

Original writeup (https://github.com/DoomHackCTF/WriteUps/tree/main/picoCTF2022/Forensics/Lookey%20here).