Malicious PDF — malware analysis report

Static analysis result for SHA-256 643ace2849c4018e…

MALICIOUS

PDF

357.6 KB Created: 2015-08-22 09:04:46 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 9a96162bdb785c149675f4a2f6fcbf46 SHA-1: d1ce7ca1d8555fe2352ec0f73066b0309114c41e SHA-256: 643ace2849c4018ebe87eb8a97266b39e8ceb62236e7b336029abec4d34f137b
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to known malicious infrastructure, indicating a redirection attempt. While no scripts were explicitly extracted, the PDF structure and the malicious URL suggest it's designed to lure the user to a compromised site. The ML classifier also strongly flagged this PDF as malicious.

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%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D1%83+%D0%B4%D0%BB%D1%8F+%D0%BD%D0%B0%D0%BA%D1%80%D1%83%D1%82%D0%BA%D0%B8+%D0%BE%D0%BA%D0%BE%D0%B2+%D0%B2+%D0%BE%D0%B4%D0%BD%D0%BE%D0%BA%D0%BB%D0%B0%D1%81%D1%81%D0%BD%D0%B8%D0%BA%D0%B0%D1%85&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674613_stanok_dlya_proizvodstva_samorezov_cena.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674580_skachat_apple_mobile_device_support.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674508_igra_blickrig_3_skachat_torrent_besplatno.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054ea1.bin
1f8e69849f8ddb204e6c061276ae65fc28e524ae18b0e1ac3a96c5cc171def71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54EA1 8268 bytes
font_01_sfnt_off000566e3.bin
549d0227f63ac86c9aa4904aac24fb7d2c9413c4b450f40be35c5f995ed88a09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x566E3 15976 bytes

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