Malicious PDF — malware analysis report

Static analysis result for SHA-256 3957d1f6c88121fc…

MALICIOUS

PDF

363.8 KB Created: 2015-08-28 11:50:50 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: dec5f06d23ede3db3f4c7616976b7871 SHA-1: 6820e1f5e1c6024d3b50e3542d26831d18530e63 SHA-256: 3957d1f6c88121fc0d1ad0f8e8c4da75237f77ad7269263c5485dc524342dcc2
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics as malicious, including a critical finding for a link to known malicious redirector infrastructure. The embedded URL http://botcraftman.ru/... is confirmed as malicious. This indicates the PDF's primary function is to redirect the user to a harmful site, likely for malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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-9136673-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9136673-0
  • 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%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B0%D0%BB%D0%B4%D0%B0+%D0%BD%D0%B0+%D0%BA%D0%BE%D0%BC%D0%BF%D1%8C%D1%8E%D1%82%D0%B5%D1%80+%D0%BD%D0%B0+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC+%D1%8F%D0%B7%D1%8B%D0%BA%D0%B5&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802440_kak__otklyuchit__cenzuru_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802679_yetot__mir__priduman_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802426_programma__dlya__nablyudeniya_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056a0c.bin
def834c03f7cbd8fbb9d68941cada21571f84a4d1273327f87368acef4e3aff6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56A0C 8324 bytes
font_01_sfnt_off000581f4.bin
465f3e9e85f23658224826dd04a1003d5034cd28f545dae669880acf9b9faf51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x581F4 14220 bytes

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