If you would like to split or extract selected pages into new pdf files, please do the following:

1. Launch the application ABBYY FineReader for iOS, 
2. Open your document, 
3. Click on Modify, 
4. Select pages that you want to move to another document or to a new document, 
5. Click on Plus:
   ,
6. Select Copy to the new document,
7. Select Copy to add the page(s) to another document in the app.

Please note that selecting Move to the new document or Move will remove the page(s) from the initial document.