Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd57bcceee8f1b1f…

MALICIOUS

PDF

375.3 KB Created: 2015-08-26 09:49:21 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: cba79a9e8c17d05bc79e8c3f94c72426 SHA-1: e0a62b07ccd0e90ee03abcbd4aa4b30a0f098aa2 SHA-256: fd57bcceee8f1b1f9b067704bb58930a1b1e89167e0d8cfee1bf08f3f1d5d1f8
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The embedded URL 'http://botcraftman.ru/?lip&keyword=europa+universalis+iv+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8' is the primary indicator of malicious intent. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine the exact lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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=europa+universalis+iv+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751756_skachat__maynkraft__172_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751788_skachat__smartshare__dlya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751504_slushay__tescha__drug_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00059517.bin
773d75e45c0c2010f9d5367f10b6668b9988b240d8e4efb12016de2263823f2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59517 9296 bytes
font_01_sfnt_off0005adda.bin
3cc41e3884af81fbc20db38decbb144583e6138aacc204e4983fdc5ed40b2ee6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5ADDA 15924 bytes

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