Malicious PDF — malware analysis report

Static analysis result for SHA-256 66f05348ce08e846…

MALICIOUS

PDF

369.5 KB Created: 2015-08-28 11:29:50 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 942c996e1c7b94e08ee45151ff17f770 SHA-1: 7833c790c414776917ce35a06c6fe038dd274fb2 SHA-256: 66f05348ce08e846bee5d51988a2f2e7e3f0a32c68f54a7defa0165e2410b9e9
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded link to a known malicious redirector URL, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the presence of a malicious redirector strongly suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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%BE%D0%BB%D1%8B%D0%B5+%D1%8D%D0%BB%D1%8C%D1%84%D0%B8%D0%B9%D0%BA%D0%B8+%D0%BA%D0%B0%D1%80%D1%82%D0%B8%D0%BD%D0%BA%D0%B8&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802358_kak__vosstanovit__udalennuye_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802366_otrava__kruysinaya__smert_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802360_panasonic_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00057d5e.bin
b457e01844f880d4f909f3a9e932ef194596cefbd74ac58ed5cf44532cc6851f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57D5E 7776 bytes
font_01_sfnt_off000593b5.bin
114d6272a95da6edfa8f6cc0b8af09bb6d86cd021c29ceb78bc705a7ce85cc2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x593B5 16788 bytes

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