AdobePdf
application/octet-stream
Magic Bytes
Offset: 0
25 21 50 53 2D 41 64 6F 62 65 2D 2E 20 50 44 46 2D 2E
AdobePdf is a specialized PostScript file format developed by Adobe Systems to facilitate the conversion of layout data into the Portable Document Format. It was primarily used within Adobe Acrobat Distiller workflows and various printing subsystems to translate page description commands into standard PDF documents. Although historically relevant for document production, the format is now considered legacy as modern applications typically export PDF files directly without requiring this intermediate conversion step.
Validation Code
How to validate .adobepdf files in Python
Python
def is_adobepdf(file_path: str) -> bool:
"""Check if file is a valid ADOBEPDF by magic bytes."""
signature = bytes([0x25, 0x21, 0x50, 0x53, 0x2D, 0x41, 0x64, 0x6F, 0x62, 0x65, 0x2D, 0x2E, 0x20, 0x50, 0x44, 0x46, 0x2D, 0x2E])
with open(file_path, "rb") as f:
return f.read(18) == signatureHow to validate .adobepdf files in Node.js
Node.js
function isADOBEPDF(buffer: Buffer): boolean {
const signature = Buffer.from([0x25, 0x21, 0x50, 0x53, 0x2D, 0x41, 0x64, 0x6F, 0x62, 0x65, 0x2D, 0x2E, 0x20, 0x50, 0x44, 0x46, 0x2D, 0x2E]);
return buffer.subarray(0, 18).equals(signature);
}
Go
func IsADOBEPDF(data []byte) bool {
signature := []byte{0x25, 0x21, 0x50, 0x53, 0x2D, 0x41, 0x64, 0x6F, 0x62, 0x65, 0x2D, 0x2E, 0x20, 0x50, 0x44, 0x46, 0x2D, 0x2E}
if len(data) < 18 {
return false
}
return bytes.Equal(data[:18], signature)
}API Endpoint
GET
/api/v1/adobepdf
curl https://filesignature.org/api/v1/adobepdf