Windows Server 2003 printer spool file
application/octet-stream
Magic Bytes
Offset: 0
4B 57 41 4A 88 F0 27 D1
The Windows Server 2003 printer spool file is a shadow file format developed by Microsoft for managing printing operations within legacy server environments. These files store metadata and administrative tracking information for specific print jobs, allowing the Print Spooler service to resume or manage document queues after a system restart. While primarily an obsolete format, SHD files remain relevant for digital forensics because they contain job-specific timestamps and user identity details.
Validation Code
How to validate .shd files in Python
Python
def is_shd(file_path: str) -> bool:
"""Check if file is a valid SHD by magic bytes."""
signature = bytes([0x4B, 0x57, 0x41, 0x4A, 0x88, 0xF0, 0x27, 0xD1])
with open(file_path, "rb") as f:
return f.read(8) == signatureHow to validate .shd files in Node.js
Node.js
function isSHD(buffer: Buffer): boolean {
const signature = Buffer.from([0x4B, 0x57, 0x41, 0x4A, 0x88, 0xF0, 0x27, 0xD1]);
return buffer.subarray(0, 8).equals(signature);
}
Go
func IsSHD(data []byte) bool {
signature := []byte{0x4B, 0x57, 0x41, 0x4A, 0x88, 0xF0, 0x27, 0xD1}
if len(data) < 8 {
return false
}
return bytes.Equal(data[:8], signature)
}API Endpoint
GET
/api/v1/shd
curl https://filesignature.org/api/v1/shd