!!! Overview
[{$pagename}] and [DN-Binary], [ADSTYPE_DN_WITH_BINARY] all appear to point to [2.5.5.7] and [1.2.840.113556.1.4.903] as a [DN Syntax]


[{$pagename}] (also referred to as [DNWithBinary]) is defined in an [Internet Draft] [draft-armijo-ldap-syntax-00] for [Microsoft Active Directory] [LDAPSyntaxes] with an [OID] of [1.2.840.113556.1.4.903] 

%%prettify 
{{{
DNWithOctetString: 1.2.840.113556.1.4.903
        Encoded as a :
        DNWithOctetString  = OctetTag ':' Count ':' OctetString ':' DN
        OctetTag = 'B' | 'b'
        Count = positive decimal number, counting number of encoded characters
                in OctetString
        OctetString = [EncodedByte]*  // Note: the number of characters in the
                string encoding of the OctetString is Count.
        EncodedByte = [0-9 | a-f | A-F] [0-9 | a-f | A-F]
        DN = <normal string encoding of a DN>

        As an example, the string encoding of the combination of 0x74 0x65 0x73
        0x74 and DC=Microsoft,DC=Com is

        B:8:74657374:DC=Microsoft,DC=Com
}}} 
/%


[2.5.5.7] for a [DN] with [binary] (a.k.a. [DN] with [octetString]) or A [Distinguished Name] plus a [binary] large object.

!! More Information
There might be more information for this subject on one of the following:
[{ReferringPagesPlugin before='*' after='\n' }]
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* [#1] - [3.1.1.2.2.2 LDAP Representations|https://msdn.microsoft.com/en-us/library/cc223177.aspx|target='_blank'] - based on information obtained 2017-06-13-