Malicious PDF — malware analysis report

Static analysis result for SHA-256 42345470aceed1cb…

MALICIOUS

PDF

353.6 KB Created: 2015-08-24 01:40:49 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 089f244a36eb1dae52a8c9371728b5c3 SHA-1: 442360e0204f9718d30f9d5fcb2f2f2f6925919a SHA-256: 42345470aceed1cb004bcd33dd132eba731cbe131b66e64cffd800b4943afcf5
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The embedded URL, http://botcraftcraftman.ru/..., is highly suspicious and likely serves as a lure to a malicious site. While no scripts were extracted, the presence of a malicious link strongly suggests an attempt to deliver a secondary payload or phish the user.

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=%D1%81%D1%85%D0%B5%D0%BC%D0%B0+%D0%BF%D0%BE%D0%B4%D0%BA%D0%BB%D1%8E%D1%87%D0%B5%D0%BD%D0%B8%D1%8F+%D0%BA%D0%BD%D0%BE%D0%BF%D0%BA%D0%B8+%D1%81%D1%82%D0%B5%D0%BA%D0%BB%D0%BE%D0%BF%D0%BE%D0%B4%D1%8A%D0%B5%D0%BC%D0%BD%D0%B8%D0%BA%D0%B0+%D0%B2%D0%B0%D0%B7+2109&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4696/4696050_aleksandr__vestov__skachat_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4695/4695655_masha__i__medved_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4695/4695319_chertezhi__podramnika_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005402f.bin
0443038e4190a78c932fcd295d031c1e3bc4172df6e4e9641bdd063dc6bd9d67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5402F 9112 bytes
font_01_sfnt_off00055b0f.bin
532d4e5c9939a9b835abb0817f1ecf4e433049d1cb8b32efd676ac633d181d60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55B0F 13800 bytes

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