Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c6c6cf6b2a6e458…

MALICIOUS

PDF

352.2 KB Created: 2015-08-28 11:39:10 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: fb27be9cc74177c8503ae42175e9367f SHA-1: a371a4fcf5801b718b630e55c9469db104583c1c SHA-256: 8c6c6cf6b2a6e458b5789e70884c6405686690e97eb2fa44a884f64ba74bfd7b
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical finding for a malicious redirector link. The ML classifier also strongly indicated maliciousness. The embedded URL http://botcraftman.ru/... is identified as a known malicious redirector, suggesting the document's primary purpose is to lure users to a compromised or malicious site. No scripts were extracted, but the PDF structure and the malicious URL are sufficient indicators.

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-9242427-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9242427-0
  • 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=%D1%81%D0%B5%D0%BD%D1%81%D0%BE%D1%80%D0%BD%D0%BE%D0%B5+%D0%BF%D0%B8%D0%B0%D0%BD%D0%B8%D0%BD%D0%BE+%D0%BE%D0%BD%D0%BB%D0%B0%D0%B9%D0%BD+%D0%B8%D0%B3%D1%80%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802539_padro__pio__kniga_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802382_russkaya__vyaz_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802515_izh__yupiter__3_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054288.bin
42498ea7d9cbc6ae832a5ca50da27e5f1d356dc8c67f1dd6593300a82fc9af22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54288 7320 bytes
font_01_sfnt_off00055762.bin
37628eb9d70956d8323221b1d581710396ae51cfdbbb8b3f8dcaf1e7e7dcf354		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55762 13136 bytes

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