diff --git a/forensics/riddle_registry/confidential.pdf b/forensics/riddle_registry/confidential.pdf
new file mode 100644
index 0000000..edb77c9
Binary files /dev/null and b/forensics/riddle_registry/confidential.pdf differ
diff --git a/forensics/riddle_registry/solve.sh b/forensics/riddle_registry/solve.sh
new file mode 100755
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--- /dev/null
+++ b/forensics/riddle_registry/solve.sh
@@ -0,0 +1,4 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p poppler-utils gnugrep gnused
+
+pdfinfo confidential.pdf | grep Author | sed -E 's/Author:\s+//' | base64 -d