We are given a truncated PDF file.
It can be (partially) repaired by appending some information after the binary.

[writeup](https://ptr-yudai.hatenablog.com/entry/2019/04/25/141422#Misc-190pts-Paper-Cut)

Original writeup (https://ptr-yudai.hatenablog.com/entry/2019/04/25/141422#Misc-190pts-Paper-Cut).