Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5c4db6987e8cbc1…

MALICIOUS

PDF

372.2 KB Created: 2015-08-28 11:28:44 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 35170a499b352439e159c63f11bd9880 SHA-1: 19810604845b4ccbc96f5be449d91354b80cea0c SHA-256: a5c4db6987e8cbc119f7aa9191829d3c265ce483c11e724f6d36e871d4f2cd6f
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to 'botcraftman.ru', which is identified as a malicious redirector. This suggests the document's primary purpose is to redirect users to a harmful destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

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%B4%D0%B5%D1%82%D0%B0%D0%BB%D0%B8+%D0%BC%D0%B0%D1%88%D0%B8%D0%BD+%D0%B8+%D0%BE%D1%81%D0%BD%D0%BE%D0%B2%D1%8B+%D0%BA%D0%BE%D0%BD%D1%81%D1%82%D1%80%D1%83%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D1%8F+%D0%BA%D1%83%D1%80%D1%81%D0%BE%D0%B2%D0%B0%D1%8F+%D1%80%D0%B0%D0%B1%D0%BE%D1%82%D0%B0&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4793/4793608_skachat__3ds__max_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4797/4797522_cvetuschaya__yablonya__iz_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4800/4800787_1sbitriks24__skachat_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00058c28.bin
3543101158cf615fec61e5ecfdb8b553f6b0e52fcda31afe2549e5312849dec3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58C28 7912 bytes
font_01_sfnt_off0005a319.bin
928701be7cc1dd602323864a2aab5be48d2e5b61bc23485ee57276f64dcc9779		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A319 14776 bytes

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