diff --git a/archiveteam_project_url_extractor.py b/archiveteam_project_url_extractor.py
index 72d0fee..44549e9 100644
--- a/archiveteam_project_url_extractor.py
+++ b/archiveteam_project_url_extractor.py
@@ -77,7 +77,7 @@ url_patterns = {
     r'(mediafire\.com|mfi\.re)\S+': 'filtered_mediafire_mfi.re.txt',
     r'\S*imgur\S*': 'filtered_imgur.txt',
     r'http(s)?://(www\.)?pastebin.com': 'filtered_pastebin.txt',
-    r'https://cdn.discordapp.com': 'filtered_cdn.discordapp.com.txt'
+    r'https?://\S+\.pdf\b'': 'filtered_cdn.discordapp.com.txt'
 }
 
 # Ask the user for the number of concurrent instances