Malicious PDF — malware analysis report

Static analysis result for SHA-256 32d91cc7548d8e85…

MALICIOUS

PDF

353.3 KB Created: 2015-08-28 17:31:07 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 28a025cd87ce1f1d13732918afa6b495 SHA-1: a828b4f54d333c0818d4b362e8e58598b4b53d39 SHA-256: 32d91cc7548d8e85819e07c034cc76c16ae9a1c009d4759f09dd7ff1c6535d48
92 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, 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, and the document body was unreadable, so the exact nature of the lure could not be determined.

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%BD%D0%B0%D0%B2%D0%B8%D0%B3%D0%B0%D1%82%D0%BE%D1%80+%D0%BF%D0%B5%D1%80%D0%BC%D1%8C+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809111_skachat__kaha__na_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809110_zayavlenie__na__remont_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809201_drp13r370full__skachat_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000543d3.bin
950b5d3e0dff71f8d3e5875eaba32d4432de0f16243ca390d9595acd132bf5cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x543D3 8156 bytes
font_01_sfnt_off00055b41.bin
66a7ceef5a58830e34721002c22163c323412f934c5a765ff7fed2af77d43965		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55B41 13404 bytes

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