Malicious PDF — malware analysis report

Static analysis result for SHA-256 58924eb12c6d474b…

MALICIOUS

PDF

355.0 KB Created: 2015-08-26 19:56:16 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 9979af3f75d5af4e4891bd090b05d40d SHA-1: 005ce44ab78b094746b2c86cd417106265ba9044 SHA-256: 58924eb12c6d474bea63089b06dc5fa3e8c56337a5fe179f28b11a903bbd7500
90 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The embedded URL points to 'botcraftman.ru', which is flagged as malicious. The document body is heavily obfuscated and does not provide clear user-facing text, but the presence of the malicious link is sufficient to determine the attack vector. 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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+card+wars+adventure+time&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4762/4762772_skachat__igru__gta_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4762/4762612_licenzionnuyy__klyuch__dlya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4762/4762139_tehnologiya__tekstilnoy_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053f9a.bin
02e61b8b9e45805fd33c977cbadeb6e29530114589c37987e81ae6ba53049e38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53F9A 9520 bytes
font_01_sfnt_off00055a44.bin
7dcfa07417b97de6aa4442c08e1cfcb14afe799d99f0935dbda1033a8e0beaf0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55A44 16436 bytes

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