Is there a way to display a PDF from an output stream from a decryption cipher

Question

I am currently working on an android application that stores sensitive documents that are encrypted on the device. When the user opens the document it decrypts it and displays it to them. I have figured out the encryption I am just not sure how to display it without saving the decrypted file and then displaying it. Is there a way to send the CipherOutputStream to the pdf renderer? Is there a way to do this or do I just have to use a cache file and is that secure? Or do I have to build my own pdf renderer for this?

This is how I am decrypting the pdf

      val cipher = Cipher.getInstance("AES/ECB/PKCS5Padding")
      val inputStream = context.openFileInput(fileNameToConvert)
      val outputCacheFile = File(context.cacheDir, nameDecryptedFileToSave)
      cipher.init(Cipher.DECRYPT_MODE, key)
      CipherOutputStream(outputCacheFile.outputStream(), cipher).use {
        it.write(inputStream.readBytes())
      }