Malicious PDF — malware analysis report

Static analysis result for SHA-256 f96298fd046d3339…

MALICIOUS

PDF

362.7 KB Created: 2015-08-19 16:33:43 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-05-22
MD5: dcb406454e40b4fa846ec52cb0c54d05 SHA-1: 9ddfa22764e5b462495947867055cf213b7033df SHA-256: f96298fd046d33399ef9970e76c22fe7828b9fe0e0ce0aa053427f22d1e5421b
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is likely used to serve a second-stage payload. The document body, though heavily obfuscated, suggests a lure related to a 'print module' for Windows 7, indicating a social engineering attempt to trick the user into clicking the malicious link. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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=Easy+print+module+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B4%D0%BB%D1%8F+windows+7&charset=utf-8 In PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626536_kogda_budut_izvestnuy_rezultatuy_gia_po_matematike_2015.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4628/4628209_mixamo_fuse_skachat_torrent.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/6//4628/4628123_chernobuyl_zona_otchuzhdeniya_2_sezon_skachat_torrent.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056177.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56177 10036 bytes
SHA-256: 7360bb2fc95906976f2707c8c5cd12412544e81d36c7c6ee6ff7028fe87f62dc
font_01_sfnt_off00057e25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57E25 14744 bytes
SHA-256: a835b112e33b888bd2ab3e0ae8de05007e8ed653534ee3e2c9359c6442d8add6

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