{"success":true,"data":{"ext":"vf","name":"VF","description":"VF (Virtual Font) is a file format introduced for the TeX typesetting system, originally developed by Donald Knuth and used within TeX-related software. It is used to map character codes to glyphs and metrics, allowing TeX engines, DVI drivers, and font utilities to work with composite or reencoded fonts. VF is a legacy format in modern workflows and is generally safe, though its practical use is limited to document preparation systems that still rely on TeX font handling.","mime":["application/x-tex-virtual-font"],"risk_level":"Safe","signatures":[{"hex":"F7 CA","offset":0,"sources":[{"name":"Apache Tika","url":"https://raw.githubusercontent.com/apache/tika/main/tika-core/src/main/resources/org/apache/tika/mime/tika-mimetypes.xml"}]}],"related":[],"usage":{"python":"def is_vf(file_path: str) -> bool:\n    \"\"\"Check if file is a valid VF by magic bytes.\"\"\"\n    signature = bytes([0xF7, 0xCA])\n    with open(file_path, \"rb\") as f:\n        return f.read(2) == signature","node":"function isVF(buffer: Buffer): boolean {\n  const signature = Buffer.from([0xF7, 0xCA]);\n  return buffer.subarray(0, 2).equals(signature);\n}","go":"func IsVF(data []byte) bool {\n    signature := []byte{0xF7, 0xCA}\n    if len(data) < 2 {\n        return false\n    }\n    return bytes.Equal(data[:2], signature)\n}"}}}