Malicious PDF — malware analysis report

Static analysis result for SHA-256 b61c248315d47a0c…

MALICIOUS

PDF

362.1 KB Created: 2015-08-24 05:55:32 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: b47294e03348f5e5d8ad399b96c89b61 SHA-1: a91c7d543297608109bb3f927bb8650155403234 SHA-256: b61c248315d47a0cc33d076d969cbadb4efc754ce69a86781f0ddcd8e3248263
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector infrastructure. The ML classifier also flagged this PDF with high confidence. The embedded URL is likely used to lure the user to a site that may host phishing content or initiate a malware download. No scripts were extracted from this sample.

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%BB%D0%B8%D1%86%D0%B5%D0%BD%D0%B7%D0%B8%D0%BE%D0%BD%D0%BD%D1%8B%D0%B9+%D0%BA%D0%BB%D1%8E%D1%87+%D0%B4%D0%BB%D1%8F+%D1%84%D0%B8%D1%84%D0%B0+14+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%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/6//4694/4694790_raspisanie__seansov__v_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4701/4701190_meladze__vopreki__notuy_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4697/4697167_zvuki__mrt_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056709.bin
50aa9572f70f2c5bc732233bc6ac4b702c479a7171da6b1a5f474cf83ab0c31d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56709 8648 bytes
font_01_sfnt_off00057feb.bin
e4bfe60a2186b01e9141f9c3792012a24feedf6c99ad749d17bb27ab5c46c525		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57FEB 12668 bytes

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