def is_android_raw(raw):
    """
        Returns a string that describes the type of file, for common Android
        specific formats
    """
    val = None
    if raw[0:2] == b'PK' and b'AndroidManifest.xml' in raw:
        val = 'APK'
    elif raw[0:3] == b'dex':
        val = 'DEX'
    elif raw[0:3] == b'dey':
        val = 'DEY'
    elif raw[0:4] == b'\x03\x00\x08\x00':
        val = 'AXML'
    elif raw[0:4] == b'\x02\x00\x0c\x00':
        val = b'ARSC'
    return val
