Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2f2c137cb519852…

MALICIOUS

PDF

392.5 KB Created: 2015-08-29 11:10:39 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: f310a56f4688b5df16f7b70b7b2e8575 SHA-1: 1a2afc03e0855d74f12e9ef8fc88ca4d41467b58 SHA-256: c2f2c137cb519852c3886d4cbbce9a4902be8f8f48ca0f50afeec3a541a94dfa
150 Risk Score

Malware Insights

MITRE ATT&CK
T1200 Hardware Add-in T1059.001 PowerShell T1566.002 Spearphishing Attachment T1071.001 Web Protocols

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. A critical heuristic identified a link within the document pointing to the known malicious redirector infrastructure at http://botcraftman.ru/. This suggests the PDF's primary function is to redirect the user to a harmful site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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-8936059-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8936059-0
  • 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%BA%D0%B0%D0%BA+%D0%BD%D0%B5+%D0%BE%D1%80%D0%B0%D1%82%D1%8C+%D0%BD%D0%B0+%D1%80%D0%B5%D0%B1%D0%B5%D0%BD%D0%BA%D0%B0+%D0%BE%D0%BF%D1%8B%D1%82+%D1%81%D0%BF%D0%BE%D0%BA%D0%BE%D0%B9%D0%BD%D0%BE%D0%B3%D0%BE+%D0%B2%D0%BE%D1%81%D0%BF%D0%B8%D1%82%D0%B0%D0%BD%D0%B8%D1%8F+%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//4829/4829816_pezho__planet__2000_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4830/4830000_fallout__new__vegas_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4829/4829903_ispolnitelnaya__shema_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005d91a.bin
046a20ce79478125b3ea7679e3446341ac2f2887d04fe282730a1107f3bef7cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D91A 9740 bytes
font_01_sfnt_off0005f33a.bin
0f5a8d216b78c5bcfe594d7810196caa3c810112c2d74a7c6a2fdcc15b2e59cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F33A 15460 bytes

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