Malicious PDF — malware analysis report

Static analysis result for SHA-256 11946570f7c7b93f…

MALICIOUS

PDF

376.8 KB Created: 2015-08-25 22:17:04 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-06-17
MD5: 638591d526654935b31808bc0ea61266 SHA-1: fed9b37ab28ad5d1ffde73c518ff1f2ca6f9497a SHA-256: 11946570f7c7b93f5e62c7fa0997a35c8c1a41378c27bcdf1d1413751a460f71
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. While no scripts were explicitly extracted, the presence of a malicious redirector suggests an attempt to lure the user to a compromised site for further malicious actions, such as phishing or downloading a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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%B2%D0%B0%D1%82%D1%8B+1-5+%D1%81%D0%B5%D0%B7%D0%BE%D0%BD+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8 In PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740712_alsmskg20__skachat_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740689_manual__akpp__a_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740628_vzlom__vayfaya__dlya_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00059c4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59C4C 7928 bytes
SHA-256: 232345e50e529b411dc4ce98cd84faf5f0d144809c3d4682fa92ee53d8cf7b69
font_01_sfnt_off0005b355.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B355 15412 bytes
SHA-256: 818748c778c74587e499a5525d8c0f29664a1560284afc7656ebcf0fb9c1455b

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