Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7b5f3ffa611338d…

MALICIOUS

PDF

367.7 KB Created: 2015-08-27 09:48:24 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: c93326d366c0b2c194c8f8e949a9f1c8 SHA-1: 7607f505eaac8be60b91f98a6023b464346a58b3 SHA-256: c7b5f3ffa611338da496fd5f9ff691b72e99c57d568980558043d97590841c77
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector. The ML classifier also flagged this PDF with high confidence. The embedded URL is likely intended to lure the user into downloading further malicious content or to phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

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%BC%D0%BE%D0%B4%D1%8B+%D0%B4%D0%BB%D1%8F+farming+simulator+2015+%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+%D0%BD%D0%B0+%D0%B3%D0%B5%D0%B9%D0%BC%D1%84%D0%B0%D0%BD%D1%80%D1%84&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771987_dolzhnostnaya__instrukciya__yekonomista_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771877_boris__akunin__audioknigi_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4772/4772003_skachat__foobar2000_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056e58.bin
609e69b63d8920a13987cb4814f96a78e020d5b5a0934cff69bebe6949468ac5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56E58 10892 bytes
font_01_sfnt_off00058d1f.bin
8c8d25e5a7f53c477e6141adbb9598c61241ad6c876912f6e30b2abd21e6bc68		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58D1F 16488 bytes

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