diff --git a/lib/notion/getPostBlocks.js b/lib/notion/getPostBlocks.js
index be228594..a9e3a757 100644
--- a/lib/notion/getPostBlocks.js
+++ b/lib/notion/getPostBlocks.js
@@ -101,8 +101,8 @@ function filterPostBlocks(id, pageBlock, slice) {
       }
     }
 
-    // 如果是文件，需要重新加密签名
-    if (b?.value?.type === 'file' && b?.value?.properties?.source?.[0][0]) {
+    // 如果是文件，或嵌入式PDF，需要重新加密签名
+    if ((b?.value?.type === 'file' || b?.value?.type === 'pdf') && b?.value?.properties?.source?.[0][0]) {
       const oldUrl = b?.value?.properties?.source?.[0][0]
       const newUrl = `https://notion.so/signed/${encodeURIComponent(oldUrl)}?table=block&id=${b?.value?.id}`
       b.value.properties.source[0][0] = newUrl