private static boolean hasPOIFSHeader(InputStream is) throws IOException {
        return FileMagic.valueOf(is) == FileMagic.OLE2;
    }
Parses the embedded object/pict string

@param is actual bytes (already converted from the
             hex pair string stored in the embedded object data into actual bytes or read
             as raw binary bytes)
@return a SimpleRTFEmbObj or null
@throws IOException if there are any surprise surprises during parsing
tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-microsoft-module/src/main/java/org/apache/tika/parser/microsoft/rtf/RTFObjDataParser.java