Malicious PDF — malware analysis report

Static analysis result for SHA-256 339a66efc0b7c0ab…

MALICIOUS

PDF

346.6 KB Created: 2015-08-28 18:15:05 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 31ab75eec494ca8c909ed019513c8b16 SHA-1: 94f0c14d0a680a6b13a92bf952a89ec01f83f5ec SHA-256: 339a66efc0b7c0ab32e2a8fc378dd18f2973113bd93d76411032b7b852d5b937
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 ML classifier also flagged this PDF with high confidence. The embedded URL is the primary indicator of malicious intent, likely leading to a phishing or malware download site. No scripts were extracted, limiting further analysis of the payload.

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=eyes+the+horror+game+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BD%D0%B0+%D0%BA%D0%BE%D0%BC%D0%BF%D1%8C%D1%8E%D1%82%D0%B5%D1%80&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809410_afganskie__pesni__skachat_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809688_novaya__anketa__na_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809881_igruy__na__telefon_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000524c5.bin
7c1c04fb69d8915ad930123d50de3a10b0f72b94ecdcd22a6983def82ce84b2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x524C5 9304 bytes
font_01_sfnt_off00053ed2.bin
4f62431f1c6eb340bf6049d4e93d60105b95f150b32f06c5a63817b414603ed4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53ED2 13996 bytes

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