diff --git a/bower.json b/bower.json
index 2d3116e6b..4812d5efa 100644
--- a/bower.json
+++ b/bower.json
@@ -1,6 +1,6 @@
 {
   "name": "pdfjs-dist",
-  "version": "1.1.500",
+  "version": "1.1.503",
   "main": [
     "build/pdf.js",
     "build/pdf.worker.js"
diff --git a/build/pdf.combined.js b/build/pdf.combined.js
index 45655e4d5..679194b3f 100644
--- a/build/pdf.combined.js
+++ b/build/pdf.combined.js
@@ -22,8 +22,8 @@ if (typeof PDFJS === 'undefined') {
   (typeof window !== 'undefined' ? window : this).PDFJS = {};
 }
 
-PDFJS.version = '1.1.500';
-PDFJS.build = '39d7593';
+PDFJS.version = '1.1.503';
+PDFJS.build = '5e4910f';
 
 (function pdfjsWrapper() {
   // Use strict in our context only - users might not want it
@@ -10590,6 +10590,7 @@ var XRef = (function XRefClosure() {
         }
         return skipped;
       }
+      var objRegExp = /^(\d+)\s+(\d+)\s+obj\b/;
       var trailerBytes = new Uint8Array([116, 114, 97, 105, 108, 101, 114]);
       var startxrefBytes = new Uint8Array([115, 116, 97, 114, 116, 120, 114,
                                           101, 102]);
@@ -10627,7 +10628,7 @@ var XRef = (function XRefClosure() {
           position += skipUntil(buffer, position, trailerBytes);
           trailers.push(position);
           position += skipUntil(buffer, position, startxrefBytes);
-        } else if ((m = /^(\d+)\s+(\d+)\s+obj\b/.exec(token))) {
+        } else if ((m = objRegExp.exec(token))) {
           if (typeof this.entries[m[1]] === 'undefined') {
             this.entries[m[1]] = {
               offset: position - stream.start,
@@ -10648,6 +10649,10 @@ var XRef = (function XRefClosure() {
           }
 
           position += contentLength;
+        } else if (token.indexOf('trailer') === 0 &&
+                   (token.length === 7 || /\s/.test(token[7]))) {
+          trailers.push(position);
+          position += skipUntil(buffer, position, startxrefBytes);
         } else {
           position += token.length + 1;
         }
diff --git a/build/pdf.js b/build/pdf.js
index 0d0dbc8c0..6ec84ffef 100644
--- a/build/pdf.js
+++ b/build/pdf.js
@@ -22,8 +22,8 @@ if (typeof PDFJS === 'undefined') {
   (typeof window !== 'undefined' ? window : this).PDFJS = {};
 }
 
-PDFJS.version = '1.1.500';
-PDFJS.build = '39d7593';
+PDFJS.version = '1.1.503';
+PDFJS.build = '5e4910f';
 
 (function pdfjsWrapper() {
   // Use strict in our context only - users might not want it
diff --git a/build/pdf.worker.js b/build/pdf.worker.js
index 232740dc8..233ab89b9 100644
--- a/build/pdf.worker.js
+++ b/build/pdf.worker.js
@@ -22,8 +22,8 @@ if (typeof PDFJS === 'undefined') {
   (typeof window !== 'undefined' ? window : this).PDFJS = {};
 }
 
-PDFJS.version = '1.1.500';
-PDFJS.build = '39d7593';
+PDFJS.version = '1.1.503';
+PDFJS.build = '5e4910f';
 
 (function pdfjsWrapper() {
   // Use strict in our context only - users might not want it
@@ -4139,6 +4139,7 @@ var XRef = (function XRefClosure() {
         }
         return skipped;
       }
+      var objRegExp = /^(\d+)\s+(\d+)\s+obj\b/;
       var trailerBytes = new Uint8Array([116, 114, 97, 105, 108, 101, 114]);
       var startxrefBytes = new Uint8Array([115, 116, 97, 114, 116, 120, 114,
                                           101, 102]);
@@ -4176,7 +4177,7 @@ var XRef = (function XRefClosure() {
           position += skipUntil(buffer, position, trailerBytes);
           trailers.push(position);
           position += skipUntil(buffer, position, startxrefBytes);
-        } else if ((m = /^(\d+)\s+(\d+)\s+obj\b/.exec(token))) {
+        } else if ((m = objRegExp.exec(token))) {
           if (typeof this.entries[m[1]] === 'undefined') {
             this.entries[m[1]] = {
               offset: position - stream.start,
@@ -4197,6 +4198,10 @@ var XRef = (function XRefClosure() {
           }
 
           position += contentLength;
+        } else if (token.indexOf('trailer') === 0 &&
+                   (token.length === 7 || /\s/.test(token[7]))) {
+          trailers.push(position);
+          position += skipUntil(buffer, position, startxrefBytes);
         } else {
           position += token.length + 1;
         }
diff --git a/package.json b/package.json
index d3c864bd0..2f23e693f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "pdfjs-dist",
-  "version": "1.1.500",
+  "version": "1.1.503",
   "description": "Generic build of Mozilla's PDF.js library.",
   "keywords": [
     "Mozilla",