Malicious PDF — malware analysis report

Static analysis result for SHA-256 2446dfd14b6949d9…

MALICIOUS

PDF

381.9 KB Created: 2015-08-29 01:18:52 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: aa7d97d006c82b5127199a129a5bf6c5 SHA-1: 16f01240f0eb3510406cf342b26a126d60905d0e SHA-256: 2446dfd14b6949d9998bef40bc187fd4abebecb6139da1f4cf22d049624bef8b
90 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link to botcraftman.ru. This suggests the document is designed to lure users to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

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=%D0%B3%D0%B4%D0%B7+%D0%BF%D0%BE+%D0%B1%D0%B8%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D0%B8+9+%D0%BA%D0%BB%D0%B0%D1%81%D1%81+%D0%BF%D0%BE%D0%BD%D0%BE%D0%BC%D0%B0%D1%80%D0%B5%D0%B2%D0%B0+%D1%80%D0%B0%D0%B1%D0%BE%D1%87%D0%B0%D1%8F+%D1%82%D0%B5%D1%82%D1%80%D0%B0%D0%B4%D1%8C&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817576_ugaday__gorod_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817573_skachat__detskie_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817511_kak__zarabotat__simballuy_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005b1a8.bin
146be3f629b896fa3de999a547f794c1bf916fed4d8236ca57d760d2b4e33d07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B1A8 8672 bytes
font_01_sfnt_off0005cb18.bin
b97074014ff5c5a1ddd6f363b1e491f69d15c0dd6fb612f781664575c263cb9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB18 14040 bytes

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