Malicious PDF — malware analysis report

Static analysis result for SHA-256 553c01dbd824fa1a…

MALICIOUS

PDF

362.5 KB Created: 2015-08-28 11:32:51 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: ba65384f9c309f06a1bd806ff4ae3fbe SHA-1: d2c0d59b4eb0f10454221095ab11bc94c453e0cf SHA-256: 553c01dbd824fa1a4adefb644cc3f95cfe6023c2de3459f64b92d44da9d9d137
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/?lip&keyword=%D0%9A%D0%B0%D0%BA+%D0%BE%D1%82%D0%BA%D0%BB%D1%8E%D1%87%D0%B8%D1%82%D1%8C+%D1%86%D0%B5%D0%BD%D0%B7%D0%BE%D1%80%D1%83+%D0%B2+sims+2&charset=utf-8, is the primary indicator of malicious intent. While no scripts were extracted, the PDF structure and the malicious link strongly suggest a phishing or malware delivery attempt.

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%9A%D0%B0%D0%BA+%D0%BE%D1%82%D0%BA%D0%BB%D1%8E%D1%87%D0%B8%D1%82%D1%8C+%D1%86%D0%B5%D0%BD%D0%B7%D1%83%D1%80%D1%83+%D0%B2+sims+2&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802358_kak__vosstanovit__udalennuye_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802388_programma__dlya__redaktirovaniya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802421_mastertouch__300lu_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005605a.bin
92cfd01c39069452a965a0ae3e1ec9300a0af677da3d38978862c66c5db31c96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5605A 9216 bytes
font_01_sfnt_off00057adb.bin
7bb5c404cb9b37f6c029a8ce3a2d569e504cc4c7736902e6081746854e989b27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57ADB 15552 bytes

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