Check if the Names dictionary actually contains a Dests dictionary before attempting to get the destinations

src/core/obj.js

@@ -419,7 +419,7 @@ var Catalog = (function CatalogClosure() {
       var xref = this.xref;
       var dests = {}, nameTreeRef, nameDictionaryRef;
       var obj = this.catDict.get('Names');
-      if (obj) {
+      if (obj && obj.has('Dests')) {
         nameTreeRef = obj.getRaw('Dests');
       } else if (this.catDict.has('Dests')) {
         nameDictionaryRef = this.catDict.get('Dests');