Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e013b68875c9422…

MALICIOUS

PDF

353.0 KB Created: 2015-08-28 17:28:05 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 094342d1722ed255e31de519e785da08 SHA-1: 0c96a2e3f7cbd7bb049bc1e028eab0e95556fb0d SHA-256: 1e013b68875c942243f03c21f1a70288249d354757a197f1e10446af1ae10aa3
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious content. A critical heuristic identified a PDF link to a known malicious redirector at http://botcraftman.ru/. This suggests the PDF's primary function is to redirect the user to a potentially harmful site, likely for malware distribution.

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-8793574-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8793574-0
  • 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%80%D0%B0%D1%81%D0%BF%D0%B8%D1%81%D0%B0%D0%BD%D0%B8%D0%B5+%D0%B0%D0%B2%D1%82%D0%BE%D0%B1%D1%83%D1%81%D0%BE%D0%B2+%D1%81%D1%8B%D0%BA%D1%82%D1%8B%D0%B2%D0%BA%D0%B0%D1%80+%D0%BC%D0%B8%D0%BA%D1%83%D0%BD%D1%8C+%D1%81+%D0%B6%D0%B4+%D0%B2%D0%BE%D0%BA%D0%B7%D0%B0%D0%BB%D0%B0&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809120_skachat__besplatno__igruy_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809111_skachat__kaha__na_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809139_tohatsu__98_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053b28.bin
4ae6659722471134481c9eff4e9043f1678171ccd80661ca92d8a039ebaec59b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53B28 8312 bytes
font_01_sfnt_off00055306.bin
d1cd69afe75cd55bfb2ab8e72f55162a2f8cde2e18d002e8651d3c2766ddc6ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55306 15984 bytes

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