Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff6b5c2de107b1eb…

MALICIOUS

PDF

392.3 KB Created: 2015-08-26 19:26:18 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 021422c33a6ae231415f37bd696034c0 SHA-1: 1a8b5c13e3dd0c718c40a9f24d999166d900e214 SHA-256: ff6b5c2de107b1eb5caba285ac5892a273911f8745dfeddd46e598d6a2866658
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 embedded URL, http://botcraftman.ru/..., is likely part of a phishing or malware distribution chain. While the document body contains garbled text, the primary threat stems from the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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+medieval+2+total+war+stainless+steel+64+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4762/4762894_olimpiadnuye__zadaniya__po_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4762/4762312_skachat__drayvera__dlya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4762/4762878_sbornik__zadach__po_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005d1ba.bin
a1cf4c5506e22e24ff63fd2692615b58fe9a0c7042f605142822242688822649		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D1BA 10196 bytes
font_01_sfnt_off0005ee4b.bin
c1eba772eea529093d4ce2023ef1a5e190c8b09850e7c841a1d7679689f69ee6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE4B 16824 bytes

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