Malicious PDF — malware analysis report

Static analysis result for SHA-256 b83739f6940a2ed3…

MALICIOUS

PDF

364.1 KB Created: 2015-08-27 09:57:36 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 07e04d44ad997188761cd02e8a155673 SHA-1: f37c9b83eb03f1c15fa4ed677b78f8cc5b74a441 SHA-256: b83739f6940a2ed379644d945d68f0f477e4bbb1dd23ea7e4775fdca66bc9517
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 containing a link to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL http://botcraftman.ru/... is the primary indicator of compromise, likely serving as a lure to a malicious site. No scripts were extracted, and the document body was unreadable, but the presence of the malicious URL is sufficient evidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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%B8%D0%B3%D1%80%D0%B0%D1%82%D1%8C+3d+%D1%81%D1%82%D1%80%D0%BE%D0%B8%D1%82%D0%B5%D0%BB%D1%8C+%D0%BE%D0%BD%D0%BB%D0%B0%D0%B9%D0%BD+%D0%BA%D0%B0%D0%BA+%D0%BC%D0%B0%D0%B9%D0%BD%D0%BA%D1%80%D0%B0%D1%84%D1%82&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771986_shargorodskiy__zabludshaya__dusha_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771949_prezentaciya__na__temu_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4771/4771950_mafiya__2__dlya_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056b9d.bin
461d934ff01c6a3ffd2de6c6e18cda10bd5e95ce4f424ed803c3e28d0dd051aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56B9D 8500 bytes
font_01_sfnt_off000583bd.bin
4d2b87072478cf8b16dad709ae387641e59716ae2b48028b79ae8e8ee96ba09d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x583BD 14204 bytes

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