Malicious PDF — malware analysis report

Static analysis result for SHA-256 a67194c6073ace03…

MALICIOUS

PDF

354.5 KB Created: 2015-08-29 05:04:05 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 961b55b83ddc4a6743741e96a936c8a7 SHA-1: 9935e166ae40a0377ba265125b0ffc3d3369ef8c SHA-256: a67194c6073ace0384c828ad4ec310bf831ab7d3bc26baeb6dbd53d7752f4616
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by a machine learning classifier and contains a direct link to a known malicious redirector. The embedded URL, http://botcraftman.ru/, is likely used to funnel victims to a malicious site. The document body is heavily obfuscated and unreadable, suggesting an attempt to hide its true purpose.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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+%D1%84%D0%B8%D0%BB%D1%8C%D0%BC+%D1%88%D0%B0%D0%B3+%D0%B2%D0%BF%D0%B5%D1%80%D0%B5%D0%B4+4+%D0%BD%D0%B0+%D0%BF%D0%BB%D0%B0%D0%BD%D1%88%D0%B5%D1%82&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4821/4821566_programmiruemuye_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817970_skachat__igru__pohozhuyu_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4821/4821066_instrukciya__overlok_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000547f2.bin
b27e3c29578f5db254f3fc618119a8113e0f0a36549b89ce2b9d892f720250be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x547F2 7732 bytes
font_01_sfnt_off00055e87.bin
b262515700fd3b0d025bf440e13220f1cb84bf7efc4a4f89dc0e24bb992691d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55E87 13904 bytes

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