Malicious PDF — malware analysis report

Static analysis result for SHA-256 35972c1d7eec2739…

MALICIOUS

PDF

348.3 KB Created: 2015-08-28 11:31:00 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: b5a6a5b451bcc9d4fb56d3d03a394640 SHA-1: b5e6d5d2107a6b7f20d88b0010114455db5f30d0 SHA-256: 35972c1d7eec2739a7585a9f86b702c8dde3f65645f0a0a34ecc6b40f1cd1af9
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. The embedded URL `http://botcraftman.ru/?lip&keyword=%D0%BA%D0%B0%D0%BA+%D0%BF%D0%B8%D1%81%D0%B0%D1%82%D1%8C+%D0%B7%D0%B0%D1%8F%D0%B2%D0%BB%D0%B5%D0%BD%D0%B8%D0%B5+%D0%BD%D0%B0+%D0%BE%D1%82%D0%BF%D1%83%D1%81%D0%BA&charset=utf-8` is the primary indicator of malicious intent, suggesting a phishing or malware delivery attempt. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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%BA%D0%B0%D0%BA+%D0%BF%D0%B8%D1%81%D0%B0%D1%82%D1%8C+%D0%B7%D0%B0%D1%8F%D0%B2%D0%BB%D0%B5%D0%BD%D0%B8%D0%B5+%D0%BD%D0%B0+%D0%BE%D1%82%D0%BF%D1%83%D1%81%D0%BA&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802368_tank__t72__balkanuy_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802371_shema__ultrazvukovogo_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802370_himicheskiy__sostav__moloka_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00052c25.bin
831d0fa5db400e1bfcbf5489ea9d5ee0233b2f318acde53e62767939093f4904		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52C25 7532 bytes
font_01_sfnt_off00054232.bin
3bc1568199655057f8798d44f31c8a97d7c6e91bc2fb1f8b313ca089711f4b27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54232 15080 bytes

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