The remote Android host was detected using an outdated version of Mozilla Firefox.
Versions of Mozilla Firefox older than 24.0 contain a flaw wherein a shared object library (.so) will be optionally loaded to enable GL tracing. This library can be loaded from a world writeable location, allowing for modification or replacement by a malicious third party. Note that the flaw requires malicious software to be loaded on the device and is not accessible by web content.
Upgrade to Mozilla Firefox 24.0 for Android (or later) from the Google Play app store.