Malicious PDF — malware analysis report

Static analysis result for SHA-256 36e173817fe8627b…

MALICIOUS

PDF

379.2 KB Created: 2015-08-29 11:15:31 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6) First seen: 2021-07-07
MD5: 58dc23b5b752743852fea10969112617 SHA-1: 89eaeec9d5df43f17a856b3ab4d16e77e9241900 SHA-256: 36e173817fe8627b079b139b80149f521e78b8436bbe6e94b56c727488e87c63
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 strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL is sufficient evidence for this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

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%87%D0%B8%D1%82%D0%B0%D1%82%D1%8C+%D1%81%D0%B8%D0%BD%D0%B8%D1%86%D0%B0+%D0%BD%D0%B2+%D1%81%D0%B8%D0%BC%D0%BE%D0%BD%D0%B5%D0%BD%D0%BA%D0%BE+%D0%B2%D0%B4+%D1%82%D0%B5%D1%85%D0%BD%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D1%8F+%D1%82%D0%B5%D1%85%D0%BD%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D0%B8+%D0%B2%D0%B5%D0%B4%D0%B5%D0%BD%D0%B8%D1%8F+%D0%B4%D0%BE%D0%BC%D0%B0&charset=utf-8 In PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830122_solid__vorks__skachat_.pdfIn PDF document text
    • http://img1.liveinternet.ru/images/attach/c/7//4829/4829830_skachat__knigi__v_.pdfIn PDF document text
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830102_shanson__2012__skachat_.pdfIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005a649.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A649 8180 bytes
SHA-256: 1835f8bd6aa7dfa7c0b8167178f0a72e366b27b35553993827c7fd35c18b9ac4
font_01_sfnt_off0005be54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BE54 15008 bytes
SHA-256: 8d3abbd2245f622fa0d35d173c2d60a269f17f8c667da600822149611022c1c4

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