# 4D 53 43 46 — File format magic numbers

For 4D 53 43 46, offset is 0; extension is cab; format is Microsoft Cabinet file, recorded from its source on 2026-08-03.

- **Hex signature:** 4D 53 43 46 _(unconfirmed — we could not tie this to the quote below)_
- **Offset:** 0
- **Extension:** cab
- **Format:** Microsoft Cabinet file

## What the source says

> MSCF | 0 | cab | Microsoft Cabinet file |

## Source

- https://en.wikipedia.org/wiki/List_of_file_signatures

Last verified: 2026-08-03. Review by: 2027-08-03.
Part of [File format magic numbers](https://referencesource.org/file-format-signatures/).