fix Password-protected PDF not handled correctly

src/libs/isPdfFilePasswordProtected/index.tsx

@@ -0,0 +1,39 @@
+import * as pdfjsLib from 'pdfjs-dist';
+import type {FileObject} from '@components/AttachmentModal';
+
+const isPdfFilePasswordProtected = (file: FileObject): Promise<boolean> =>
+    new Promise((resolve) => {
+        const reader = new FileReader();
+
+        reader.onload = (event) => {
+            const arrayBuffer = event.target?.result;
+            if (!arrayBuffer) {
+                resolve(false);
+                return;
+            }
+            try {
+                const loadingTask = pdfjsLib.getDocument({data: arrayBuffer});
+                loadingTask.promise.then(
+                    () => {
+                        resolve(false);
+                    },
+                    (error) => {
+                        if (error.name === 'PasswordException') {
+                            resolve(true);
+                            return;
+                        }
+                        resolve(false);
+                    },
+                );
+            } catch (error) {
+                resolve(false);
+            }
+        };
+
+        reader.onerror = () => {
+            resolve(false);
+        };
+
+        reader.readAsArrayBuffer(file as Blob);
+    });
+export default isPdfFilePasswordProtected;

src/pages/iou/request/step/IOURequestStepScan/index.tsx

@@ -25,6 +25,7 @@ import useWindowDimensions from '@hooks/useWindowDimensions';
 import * as Browser from '@libs/Browser';
 import * as FileUtils from '@libs/fileDownload/FileUtils';
 import getCurrentPosition from '@libs/getCurrentPosition';
+import isPdfFilePasswordProtected from '@libs/isPdfFilePasswordProtected';
 import Log from '@libs/Log';
 import Navigation from '@libs/Navigation/Navigation';
 import * as OptionsListUtils from '@libs/OptionsListUtils';
@@ -212,6 +213,15 @@ function IOURequestStepScan({
                     return false;
                 }
 
+                if (fileExtension === 'pdf') {
+                    return isPdfFilePasswordProtected(file).then((isProtected: boolean) => {
+                        if (isProtected) {
+                            setUploadReceiptError(true, 'attachmentPicker.wrongFileType', 'attachmentPicker.protectedPDFNotSupported');
+                            return false;
+                        }
+                        return true;
+                    });
+                }
                 return true;
             })
             .catch(() => {