Drumlin Fully Secure PDF file (.drmz)

.drmz file signature | application/octet-stream

Drumlin Fully Secure PDF file. These files use a proprietary format that requires the Javelin PDFReader to be viewed and a unique authorization code. DRMZ files are compatible with mobile devices.

Safe

Magic Bytes

Offset 0


              7B 44 52 4D 50 44 4B 7D

Sources: Gary Kessler

Extension

.drmz

MIME Type

application/octet-stream

Byte Offset

Risk Level

Safe

Validation Code

How to validate .drmz files in Python

Python

def is_drmz(file_path: str) -> bool:
    """Check if file is a valid DRMZ by magic bytes."""
    signature = bytes([0x7B, 0x44, 0x52, 0x4D, 0x50, 0x44, 0x4B, 0x7D])
    with open(file_path, "rb") as f:
        return f.read(8) == signature

How to validate .drmz files in Node.js

Node.js

function isDRMZ(buffer: Buffer): boolean {
  const signature = Buffer.from([0x7B, 0x44, 0x52, 0x4D, 0x50, 0x44, 0x4B, 0x7D]);
  return buffer.subarray(0, 8).equals(signature);
}

How to validate .drmz files in Go

func IsDRMZ(data []byte) bool {
    signature := []byte{0x7B, 0x44, 0x52, 0x4D, 0x50, 0x44, 0x4B, 0x7D}
    if len(data) < 8 {
        return false
    }
    return bytes.Equal(data[:8], signature)
}

API Endpoint

GET /api/v1/drmz


              curl https://filesignature.org/api/v1/drmz

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .drmz file?

A .drmz file is a Drumlin Fully Secure PDF file file. Drumlin Fully Secure PDF file. These files use a proprietary format that requires the Javelin PDFReader to be viewed and a unique authorization code. DRMZ files are compatible with mobile devices.

What are the magic bytes for .drmz files?

The magic bytes for Drumlin Fully Secure PDF file files are 7B 44 52 4D 50 44 4B 7D at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .drmz file?

To validate a .drmz file, read the first bytes of the file and compare them against the known magic bytes (7B 44 52 4D 50 44 4B 7D) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .drmz files?

There is no officially registered MIME type for .drmz files. Systems typically use application/octet-stream as a generic fallback when handling this format.

Is it safe to open .drmz files?

Drumlin Fully Secure PDF file (.drmz) files are generally safe to open. They are classified as low risk because they primarily contain data rather than executable code. However, always ensure files come from a trusted source.