Malicious PDF — malware analysis report

Static analysis result for SHA-256 abbfbff38038a517…

MALICIOUS

PDF

352.7 KB Created: 2015-08-25 08:40:58 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 33ae321b9b7360c5a2940b314f251062 SHA-1: 7251922ebe6d6016230cd79ac2c8323c2957f826 SHA-256: abbfbff38038a517852ba032b7aede25f322b884dc226fe6e427816372b4ba3a
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. The embedded URL, http://botcraftman.ru/?lip&keyword=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+zip+manager+%D0%B4%D0%BB%D1%8F+nokia+5800&charset=utf-8, is the primary indicator of malicious intent, likely serving as a lure for phishing or malware distribution. No scripts were extracted, limiting further analysis of the execution chain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+zip+manager+%D0%B4%D0%BB%D1%8F+nokia+5800&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4725/4725350_sherhan__logikar__4_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4725/4725246_igrat__v__avtobusuy_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4725/4725220_skachat__igru__killzone_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053705.bin
ae9c14dcfbd9e82cd5c7984f433b74695f52787b2f9d3cdecb3f08d81c8f1dc5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53705 9216 bytes
font_01_sfnt_off000550d3.bin
313256f5640cd67bb6f1ee59ae0be5795f8348ba6591dc1e0dff733512ae5bb5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x550D3 16700 bytes

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