Malicious PDF — malware analysis report

Static analysis result for SHA-256 532c69aaf255d383…

MALICIOUS

PDF

349.4 KB Created: 2015-08-28 17:55:54 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: f5ff334d48e5768602587a012f4c32c6 SHA-1: 0d69444153a6f984d35a34ea15617f460776b510 SHA-256: 532c69aaf255d3837b43f3b666262d8298e509f4e4b3038d96c78a58395d0bb7
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, http://botcraftman.ru/, which is a strong indicator of malicious intent. The ClamAV detection of 'Pdf.Dropper.Agent-8165869-0' further supports this, suggesting the PDF is designed to drop or redirect to other malicious content. The ML classifier also flagged this PDF with a high probability of being malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-8165869-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8165869-0
  • 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%BD%D0%B0%D0%B9%D1%82%D0%B8+%D0%B2%D0%BB%D1%8E%D0%B1%D0%B8%D1%82%D1%8C%D1%81%D1%8F+%D0%B8+%D0%BE%D1%82%D0%BE%D0%BC%D1%81%D1%82%D0%B8%D1%82%D1%8C+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809564_obnovit__movie_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809456_jewels__saga__igrat_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809569_kalambur__derevnya__durakov_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00052f20.bin
559ff84cc2e0d968ea440918ba17b1b149bf5966a65d66f9c9386f5df9d2b013		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52F20 8496 bytes
font_01_sfnt_off000546e3.bin
a09762000431b1ca41a12aedba61555b876e0ca8d8749f636bcf8321e5875f9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x546E3 15268 bytes

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