Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b47e971658096d9…

MALICIOUS

PDF

370.4 KB Created: 2015-08-25 03:10:22 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 157873974698c0166c6fa68d2645c136 SHA-1: fb3ce7102ee397ecf56e8b44666f0ab8c25d61a0 SHA-256: 0b47e971658096d9181e5feb1384a5740805381997ebff863a59c65f0c06eb6c
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded link to a known malicious redirector, botcraftman.ru. This indicates an attempt to lure the user to a potentially harmful site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL is sufficient evidence for this assessment.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B8%D0%B3%D1%80%D1%83+%D1%81%D0%BE%D0%BA%D1%80%D0%BE%D0%B2%D0%B8%D1%89%D0%B0+%D0%BF%D0%B8%D1%80%D0%B0%D1%82%D0%BE%D0%B2+%D1%82%D1%80%D0%B8+%D0%B2+%D1%80%D1%8F%D0%B4+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4697/4697996_chertezh_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4701/4701190_meladze__vopreki__notuy_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4709/4709541_skachat__ifruit__gta_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000584e8.bin
10d9c2c4472ba381d802727e7638c6809f554158b1c58448a35a3879c2a4dcea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x584E8 8016 bytes
font_01_sfnt_off00059c15.bin
0a281d71c38ad528846eea7b81aa8b27e028514ea0b08594021889a6a95f20c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59C15 14808 bytes

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