diff --git a/33c3-ctf/misc/pdfmaker-75/README.md b/33c3-ctf/misc/pdfmaker-75/README.md
index 5289a78f..0c87862b 100644
--- a/33c3-ctf/misc/pdfmaker-75/README.md
+++ b/33c3-ctf/misc/pdfmaker-75/README.md
@@ -18,3 +18,4 @@ nc 78.46.224.91 24242
 * https://github.com/EdwardPwnden/ctf-2016/tree/master/33c3/pdfmaker
 * http://bruce30262.logdown.com/posts/1255893
 * https://ssspeedgit00.github.io/2016/12/30/2016-33c3-m1/
+* https://yous.be/2017/02/20/33c3-ctf-2016-pdfmaker-write-up/