Returns a string that describes the type of file, for common Android
        specific formats

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'META-INF/MANIFEST.MF' 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