The PAC_REQUESTOR structure is a variable length buffer of the PAC that SHOULD<26> contain the SID ([MSDN-SID]) of the client that requested the ticket. In normal scenarios, that will be the SID of the account named in the cname ([MS-SFU] section 2.2.2). In delegation scenarios (as described in [MS-SFU]), that may differ from the account named in the cname. The PAC_ATTRIBUTES_INFO structure is placed directly after the Buffers array of the topmost PACTYPE structure (section 2.3), at the offset specified in the Offset field of the corresponding PAC_INFO_BUFFER structure (section 2.4) in the Buffers array. The ulType field of the corresponding PAC_INFO_BUFFER is set to 0x00000012.
The PAC_REQUESTOR structure contains a single SID structure.