diff --git a/README.md b/README.md
index 0ca8889..9c479a7 100644
--- a/README.md
+++ b/README.md
@@ -112,6 +112,8 @@ A curated list of awesome malware analysis tools and resources. Inspired by
   pdf-parser, and more from Didier Stevens.
 * [PDF X-Ray Lite](https://github.com/9b/pdfxray_lite) - A PDF analysis tool,
   the backend-free version of PDF X-RAY.
+* [peepdf](http://eternal-todo.com/tools/peepdf-pdf-analysis-tool) - Python
+  tool for exploring possibly malicious PDFs.
 * [Spidermonkey](https://developer.mozilla.org/en-US/docs/Mozilla/Projects/SpiderMonkey) -
   Mozilla's JavaScript engine, for debugging malicious JS.