diff --git a/src/core/evaluator.js b/src/core/evaluator.js
index ff6699cf8..d7bccc401 100644
--- a/src/core/evaluator.js
+++ b/src/core/evaluator.js
@@ -16,8 +16,8 @@
 import {
   AbortException, assert, CMapCompressionType, createPromiseCapability,
   FONT_IDENTITY_MATRIX, FormatError, getLookupTableFactory, IDENTITY_MATRIX,
-  info, isNum, isString, NativeImageDecoding, OPS, TextRenderingMode,
-  UNSUPPORTED_FEATURES, Util, warn
+  info, isNum, isString, NativeImageDecoding, OPS, stringToPDFString,
+  TextRenderingMode, UNSUPPORTED_FEATURES, Util, warn
 } from '../shared/util';
 import { CMapFactory, IdentityCMap } from './cmap';
 import { DecodeStream, Stream } from './stream';
@@ -1871,8 +1871,8 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
         var cidSystemInfo = dict.get('CIDSystemInfo');
         if (isDict(cidSystemInfo)) {
           properties.cidSystemInfo = {
-            registry: cidSystemInfo.get('Registry'),
-            ordering: cidSystemInfo.get('Ordering'),
+            registry: stringToPDFString(cidSystemInfo.get('Registry')),
+            ordering: stringToPDFString(cidSystemInfo.get('Ordering')),
             supplement: cidSystemInfo.get('Supplement'),
           };
         }
diff --git a/src/core/fonts.js b/src/core/fonts.js
index 168444693..aff4ac513 100644
--- a/src/core/fonts.js
+++ b/src/core/fonts.js
@@ -35,6 +35,7 @@ import {
   getUnicodeForGlyph, getUnicodeRangeFor, mapSpecialUnicodeValues
 } from './unicode';
 import { FontRendererFactory } from './font_renderer';
+import { IdentityCMap } from './cmap';
 import { Stream } from './stream';
 import { Type1Parser } from './type1_parser';
 
@@ -2308,9 +2309,11 @@ var Font = (function FontClosure() {
 
       var isTrueType = !tables['CFF '];
       if (!isTrueType) {
-        // OpenType font (skip composite fonts with non-default CID to GID map).
-        if ((header.version === 'OTTO' &&
-             !(properties.composite && properties.cidToGidMap)) ||
+        const isComposite = properties.composite &&
+                            ((properties.cidToGidMap || []).length > 0 ||
+                             !(properties.cMap instanceof IdentityCMap));
+        // OpenType font (skip composite fonts with non-default glyph mapping).
+        if ((header.version === 'OTTO' && !isComposite) ||
             !tables['head'] || !tables['hhea'] || !tables['maxp'] ||
             !tables['post']) {
           // No major tables: throwing everything at `CFFFont`.
diff --git a/test/pdfs/.gitignore b/test/pdfs/.gitignore
index bd38ac166..cd4cc8b70 100644
--- a/test/pdfs/.gitignore
+++ b/test/pdfs/.gitignore
@@ -70,6 +70,7 @@
 !issue9291.pdf
 !issue9418.pdf
 !issue9458.pdf
+!issue9915_reduced.pdf
 !bad-PageLabels.pdf
 !decodeACSuccessive.pdf
 !filled-background.pdf
diff --git a/test/pdfs/issue9915_reduced.pdf b/test/pdfs/issue9915_reduced.pdf
new file mode 100644
index 000000000..f515595a9
Binary files /dev/null and b/test/pdfs/issue9915_reduced.pdf differ
diff --git a/test/test_manifest.json b/test/test_manifest.json
index 0cd02a1a8..feb2f04c2 100644
--- a/test/test_manifest.json
+++ b/test/test_manifest.json
@@ -1339,6 +1339,13 @@
        "link": false,
        "type": "eq"
     },
+    {  "id": "issue9915",
+       "file": "pdfs/issue9915_reduced.pdf",
+       "md5": "c56dabe5066a6c821901920e09dffe00",
+       "rounds": 1,
+       "link": false,
+       "type": "eq"
+    },
     {  "id": "issue8570",
        "file": "pdfs/issue8570.pdf",
        "md5": "0355731adb72df233eaa10464dcc8c51",