#Untitled-1.pdf

In an appropriate PDF viewer (Chrome's built-in viewer should work), type ⌘-A, ⌘-C, and ⌘-V in some text editor to get the flag: `PCTF{how_2_pdf_yo}`.

Original writeup (https://github.com/TechSecCTF/writeups/blob/master/plaidctf2016/untitled/README.md).