diff --git a/.env.local b/.env.local
index 98021d01..ad3056e7 100644
--- a/.env.local
+++ b/.env.local
@@ -1,2 +1,2 @@
 # 环境变量 @see https://www.nextjs.cn/docs/basic-features/environment-variables
-NEXT_PUBLIC_VERSION=4.0.14
\ No newline at end of file
+NEXT_PUBLIC_VERSION=4.0.15
\ No newline at end of file
diff --git a/components/WWAds.js b/components/WWAds.js
index f2290a75..87901f39 100644
--- a/components/WWAds.js
+++ b/components/WWAds.js
@@ -13,6 +13,6 @@ export default function WWAds({ orientation = 'vertical', sticky = false, classN
   }
 
   return (
-    <div className={`wwads-cn ${orientation === 'vertical' ? 'wwads-vertical' : 'wwads-horizontal'} ${sticky ? 'wwads-sticky' : ''} z-30 ${className || ''}`} data-id={BLOG.AD_WWADS_ID}></div>
+    <div className={`wwads-cn ${orientation === 'vertical' ? 'wwads-vertical' : 'wwads-horizontal'} ${sticky ? 'wwads-sticky' : ''} z-10 ${className || ''}`} data-id={BLOG.AD_WWADS_ID}></div>
   )
 }
diff --git a/lib/notion/getPostBlocks.js b/lib/notion/getPostBlocks.js
index ca3090dd..a9e3a757 100644
--- a/lib/notion/getPostBlocks.js
+++ b/lib/notion/getPostBlocks.js
@@ -63,6 +63,7 @@ export async function getPageWithRetry(id, from, retryAttempts = 3) {
 
 /**
  * 获取到的blockMap删除不需要的字段
+ * 并且对于页面内容进行特殊处理，比如文件url格式化
  * @param {*} id 页面ID
  * @param {*} pageBlock 页面元素
  * @param {*} slice 截取数量
@@ -72,6 +73,7 @@ function filterPostBlocks(id, pageBlock, slice) {
   const clonePageBlock = deepClone(pageBlock)
   let count = 0
 
+  // 循环遍历文档的每个block
   for (const i in clonePageBlock?.block) {
     const b = clonePageBlock?.block[i]
     if (slice && slice > 0 && count > slice) {
@@ -99,6 +101,13 @@ function filterPostBlocks(id, pageBlock, slice) {
       }
     }
 
+    // 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
+    }
+
     delete b?.role
     delete b?.value?.version
     delete b?.value?.created_by_table
diff --git a/package.json b/package.json
index 805747eb..690ff400 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "notion-next",
-  "version": "4.0.14",
+  "version": "4.0.15",
   "homepage": "https://github.com/tangly1024/NotionNext.git",
   "license": "MIT",
   "repository": {