SD7 (.sd7)

.sd7 file signature | application/x-sas-data

SD7 is a SAS data file format developed and maintained by SAS Institute for storing structured datasets. It is used in SAS analytics workflows for statistical analysis, data preparation, reporting, and interchange between SAS applications. The format is generally safe, though as with any data file, content should be opened in trusted software; it is associated with legacy SAS storage conventions in some environments.

Safe

Magic Bytes

Offset 84


              53 41 53 20 46 49 4C 45

Sources: Apache Tika

Extension

.sd7

MIME Type

application/x-sas-data

Byte Offset

Risk Level

Safe

Validation Code

How to validate .sd7 files in Python

Python

def is_sd7(file_path: str) -> bool:
    """Check if file is a valid SD7 by magic bytes at offset 84."""
    signature = bytes([0x53, 0x41, 0x53, 0x20, 0x46, 0x49, 0x4C, 0x45])
    with open(file_path, "rb") as f:
        f.seek(84)
        return f.read(8) == signature

How to validate .sd7 files in Node.js

Node.js

function isSD7(buffer: Buffer): boolean {
  const signature = Buffer.from([0x53, 0x41, 0x53, 0x20, 0x46, 0x49, 0x4C, 0x45]);
  if (buffer.length < 92) return false;
  return buffer.subarray(84, 92).equals(signature);
}

How to validate .sd7 files in Go

func IsSD7(data []byte) bool {
    signature := []byte{0x53, 0x41, 0x53, 0x20, 0x46, 0x49, 0x4C, 0x45}
    if len(data) < 92 {
        return false
    }
    return bytes.Equal(data[84:92], signature)
}

API Endpoint

GET /api/v1/sd7


              curl https://filesignature.org/api/v1/sd7

See the full API documentation for all endpoints and parameters.

Related Formats

.sas7bdat .sd2

Frequently Asked Questions

What is a .sd7 file?

A .sd7 file is identified by the magic bytes 53 41 53 20 46 49 4C 45 at byte offset 84. SD7 is a SAS data file format developed and maintained by SAS Institute for storing structured datasets. It is used in SAS analytics workflows for statistical analysis, data preparation, reporting, and interchange between SAS applications. The format is generally safe, though as with any data file, content should be opened in trusted software; it is associated with legacy SAS storage conventions in some environments.

What are the magic bytes for .sd7 files?

The magic bytes for SD7 files are 53 41 53 20 46 49 4C 45 at byte offset 84. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .sd7 file?

To validate a .sd7 file, read the first bytes of the file and compare them against the known magic bytes (53 41 53 20 46 49 4C 45) at offset 84. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .sd7 files?

The primary MIME type for .sd7 files is application/x-sas-data.

Is it safe to open .sd7 files?

SD7 (.sd7) 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.