Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9ccc064560b7c8c…

MALICIOUS

PDF

361.7 KB Created: 2015-08-28 17:37:59 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: ed9deabcf9ccb67628cee32eb9b013de SHA-1: 280b8185b4f2634be5c0f9c5176148bb2610edff SHA-256: d9ccc064560b7c8c5c4be393f2783840a4e92d1456e60b15775f0ad523118ff3
150 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 'http://botcraftman.ru/'. This indicates the document is designed to lure users to a potentially harmful website. The ML classifier and ClamAV detection further support its malicious nature, classifying it as a Pdf.Dropper.Agent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-8070833-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8070833-0
  • 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%BA%D0%BE%D1%80%D1%81%D0%B0%D1%80%D1%8B+%D0%BA%D0%B0%D0%B6%D0%B4%D0%BE%D0%BC%D1%83+%D1%81%D0%B2%D0%BE%D0%B5+%D1%82%D1%80%D0%B5%D0%B9%D0%BD%D0%B5%D1%80&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809317_zashifrovannuyy_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809259_zhenskie__strizhki__shemuy_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809247_skachat__kartinki__dlya_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000564a2.bin
2d4b8973f89494208fa24860d42d4f998c72cf67863c0f338063c50fa70f0b36		 pdf-font-stream PDF embedded font (sfnt) at offset 0x564A2 8064 bytes
font_01_sfnt_off00057bb5.bin
599ccfa219c30001f0655a489775630977f024b44395f0110c5578fb4b7fcc21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57BB5 13704 bytes

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