Malicious PDF — malware analysis report

Static analysis result for SHA-256 b29b692f361942e7…

MALICIOUS

PDF

350.1 KB Created: 2015-08-27 09:46:33 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 066d05db03c2d71c09a7a20052265ca4 SHA-1: 13654a44e743c4636c82e64723b602477842768e SHA-256: b29b692f361942e76ea1016489f7d4d3a91139ff7b6d69cc184dc0bb13d1428a
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL, http://botcraftman.ru/..., is the primary indicator of malicious intent, likely serving as a gateway to a phishing or malware distribution page. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine the exact lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

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%B8%D1%82%D0%BE%D0%B3%D0%BE%D0%B2%D0%B0%D1%8F+%D0%BA%D0%BE%D0%BD%D1%82%D1%80%D0%BE%D0%BB%D1%8C%D0%BD%D0%B0%D1%8F+%D0%BF%D0%BE+%D0%BC%D0%B0%D1%82%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D0%BA%D0%B5+3+%D0%BA%D0%BB%D0%B0%D1%81%D1%81+%D0%BF%D0%BE+%D0%B7%D0%B0%D0%BD%D0%BA%D0%BE%D0%B2%D1%83&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771767_pavel__filatov__i_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771782_skachat__muzuyku__besplatno_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771828_zenwriter_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000530ba.bin
db0b33528b5f9fd7dfbce226ca67275bafe427d6e38b5a9ad9abe361343ca1bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x530BA 8560 bytes
font_01_sfnt_off0005498e.bin
073da7721bcd90f07b474764fd8240f4982e67064afcc2ff5b49b45fdf90b55d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5498E 15452 bytes

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