Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c11d4e36594cf81…

MALICIOUS

PDF

365.0 KB Created: 2015-08-25 22:15:58 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-10-11
MD5: 66a56cf9f323e6ba34a0414b15987baa SHA-1: b497690d89b0444f866f930500c4d06187478700 SHA-256: 9c11d4e36594cf81495dd4f8a7a9c681fd562d27a32cf0862f364a4a2e3dfce9
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 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 document with high confidence. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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%BF%D0%BE%D0%B4%D0%B1%D0%BE%D1%80%D0%BA%D0%B0+%D0%BF%D0%B5%D1%81%D0%B5%D0%BD+%D0%B4%D0%BB%D1%8F+%D0%BA%D0%BE%D0%BD%D0%BA%D1%83%D1%80%D1%81%D0%B0+%D1%88%D0%BB%D1%8F%D0%BF%D0%B0&charset=utf-8 In PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740755_skachat__pesni__iz_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740716_skachat__igru__gerkules_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740619_moskvaryazan__avtobus__vuyhino_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056be8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56BE8 9848 bytes
SHA-256: 44f78383b8d4ac155bce8659381f29f7fa4985edd0e5afce65a207cb8677186e
font_01_sfnt_off000586c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x586C4 14344 bytes
SHA-256: fd9d609802049d3efffe2de762dd2cb5b1308ad5b94afef011e271f3a948e641

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