Malicious PDF — malware analysis report

Static analysis result for SHA-256 f78e9ebde2946673…

MALICIOUS

PDF

347.6 KB Created: 2015-08-21 09:17:02 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: f46fb0ed70f6520a64fd20a2e90ec18d SHA-1: 677ad2552d16984d76f12f3b2522f664598cff91 SHA-256: f78e9ebde29466739b7bfe9906bacd201d07f5defddd20ce5973e85099c7ee0b
90 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to botcraftman.ru. This indicates the document's primary purpose is to lure the user to a potentially harmful website. No scripts were extracted, and the document body was unreadable, so the attack pattern is based solely on the embedded URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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%BF%D1%80%D0%BE%D0%B2%D0%B5%D1%80%D0%BA%D0%B0+%D1%80%D0%B5%D0%B5%D1%81%D1%82%D1%80%D0%B0+windows+7&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654700_scenariy_otchetnogo_koncerta_vokalnogo_kollektiva.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654680_perevod_teksta_s_angliyskogo_na_russkiy_6_klass_spotlight.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654686_wifi_password_hack_v5_skachat.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005239b.bin
b77cf52389ffdfe8ffd844a3ec7a640f6cbd670d463a5660c271acde626cc153		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5239B 8652 bytes
font_01_sfnt_off00053cce.bin
f31cc98ca9b150e4c13a5fde1f1f3b6c43e4ff2b3dceba629b626f89c6cd010a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53CCE 16448 bytes

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