Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9b721d8198b29ab…

MALICIOUS

PDF

370.3 KB Created: 2015-08-28 18:28:15 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 97292186410095bfc8a25fc6fc50347b SHA-1: 0a5ec1b2848f1e1905d4a96be7d4af70b2fb090e SHA-256: f9b721d8198b29aba595dc6d2be7770949933527e54157d18a2b20f0826b0601
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector infrastructure. This suggests the document is designed to lure the user to a malicious website. No scripts were extracted, and the document body was heavily obfuscated, preventing further analysis of its specific 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%B2%D1%8F%D0%B7%D0%B0%D0%BD%D0%B8%D0%B5+%D1%81%D0%BF%D0%B8%D1%86%D0%B0%D0%BC%D0%B8+%D1%83%D0%B7%D0%BE%D1%80%D1%8B+%D1%81%D1%85%D0%B5%D0%BC%D1%8B+%D0%BE%D0%BF%D0%B8%D1%81%D0%B0%D0%BD%D0%B8%D0%B5&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4810/4810267_nachni__dzhon__yeykaff_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4810/4810227_v__keyptaunskom__portu_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809354_skachat__igruy__na_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00058561.bin
33303d5d17634a85c98c7b54b8cada36a0497b7e58ed9428522cc60c2a535a45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58561 8556 bytes
font_01_sfnt_off00059e44.bin
9318cc213cc7baa24c54253c9d8db8bc94fb43097418862db09ebe915882fc3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59E44 13564 bytes

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