Malicious PDF — malware analysis report

Static analysis result for SHA-256 60312b7496ca830f…

MALICIOUS

PDF

355.9 KB Created: 2015-08-21 09:30:25 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 213c66c9232dfda12fc36a996d878c66 SHA-1: 3604ea334eb3bd2fab24801bc807d2ec00f69c76 SHA-256: 60312b7496ca830f8791aa3c24a61adc34ff22851234a58cfa87236c3804f07f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded URL that is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated and does not provide clear textual clues, but the presence of a malicious URL is a strong indicator of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%BA%D0%B0%D1%80%D1%82%D0%BE%D1%87%D0%BA%D0%B8+%D0%BF%D0%BE+%D0%B0%D0%BD%D0%B3%D0%BB%D0%B8%D0%B9%D1%81%D0%BA%D0%BE%D0%BC%D1%83+%D1%8F%D0%B7%D1%8B%D0%BA%D1%83+%D1%81+%D1%82%D1%80%D0%B0%D0%BD%D1%81%D0%BA%D1%80%D0%B8%D0%BF%D1%86%D0%B8%D0%B5%D0%B9&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654860_koduy_na_stalker_apokalipsis.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654709_skachat_aktivator_dlya_windows_7_all.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654813_zhurnal_registracii_uvedomleniy_rabotnikam_obrazec.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054806.bin
e7161eed497e1ad3b3a9454d5d6e657ea6f7f2c1ad0e3d5a6c5010c84e84b5dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54806 8656 bytes
font_01_sfnt_off00056112.bin
53859961fc5374366f11518ef09d1097f9f37221da8c92ec6d163511dcb6ab1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56112 15144 bytes

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