Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d2f60ebe1c1d742…

MALICIOUS

PDF

347.3 KB Created: 2015-08-28 11:52:32 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: ae876c345b6c82f31d2122b855e237f4 SHA-1: 52d23a10f238fd989ba37c054ec77883804bb67a SHA-256: 3d2f60ebe1c1d742d6b96cc17cb97d0ad9075f9a8ecfaa792decf1e49ecb07c2
90 Risk Score

Malware Insights

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

The PDF document was flagged by a critical heuristic for linking to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is likely part of a phishing or malware distribution chain. No scripts were extracted, and the document body was unreadable, so the attack pattern is inferred from the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B0%D0%B2%D0%B8%D1%80%D0%B0+%D0%B0%D0%BD%D1%82%D0%B8%D0%B2%D0%B8%D1%80%D1%83%D1%81+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802538_skachat__fruti__lups_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802649_avtokolonna__1456__cherepovec_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802525_tekst__pesni__lolita_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00052730.bin
63094b67769beeb64253fcecdc4f1117162939358d9b5cb02dcac3ba287a1b2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52730 9576 bytes
font_01_sfnt_off0005416a.bin
e4d2539e6cca2ae3dd83008b86fc4b127012496113f3e08aa8ecac952f0ad5d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5416A 13764 bytes

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