Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4b7246378e9117a…

MALICIOUS

PDF

365.8 KB Created: 2015-08-24 01:02:38 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-11-02
MD5: dd4e4fddc10414b951c63b8f3c3c13b5 SHA-1: 970478c7d060b2e543f2b9657e22e7822d0780b2 SHA-256: f4b7246378e9117a2542485331d033dc633e25d936f9ffe0c6d4f30c6152db19
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains an embedded URL that is known to redirect to malicious infrastructure. The ML classifier also flagged this PDF with high confidence. The presence of embedded URLs and the redirection behavior strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

Heuristics 2

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://botcraftman.ru/?lip&keyword=%D0%A7%D0%B5%D1%80%D1%82%D0%B5%D0%B6%D0%B8+%D0%BF%D0%BE%D0%B4%D1%80%D0%B0%D0%BC%D0%BD%D0%B8%D0%BA%D0%B0+%D0%BD%D0%B8%D0%B2%D0%B0-%D0%BA%D0%BE%D0%BC%D1%84%D0%BE%D1%80%D1%82&charset=utf-8 In PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693533_hdd__regenerator__2013_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693623_skachat__kartuy__na_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693984_bot__dlya_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056bbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56BBF 8488 bytes
SHA-256: c1c6a5be5361ff57a924b6f3f1239b10f176013da02fecf617ac1a13fff4a88a
font_01_sfnt_off000584cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x584CD 16896 bytes
SHA-256: 532c2d00a6f5ede400d8669b506b8496e756af3897cfb993fadc90c02b554341

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