Malicious PDF — malware analysis report

Static analysis result for SHA-256 c29c4eae8ec3e8e9…

MALICIOUS

PDF

360.8 KB Created: 2015-08-21 09:16:53 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: dd85a71d901c878af4f6a170a55ae9ba SHA-1: 3a8d9644e8109f7046f305e0110747098be458dc SHA-256: c29c4eae8ec3e8e9a6097d2b77ce4fd349554f547bf071aa3dbc59ebd6fadd54
150 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.002 Spearphishing Attachment T1071.001 Web Protocols

The PDF file was flagged by multiple heuristics, including a critical alert for a malicious redirector link and a machine learning classifier. The embedded URL `http://botcraftman.ru/?lip&keyword=%D1%81%D0%B8%D0%BC%D1%81+3+%D0%BC%D0%BE%D0%B4+%D0%BD%D0%B0+%D1%81%D0%B5%D0%BA%D1%81&charset=utf-8` is identified as a known malicious redirector. This suggests the PDF's primary function is to lure the user to this malicious site, likely for a drive-by download or phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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-8797516-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8797516-0
  • 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%B8%D0%BC%D1%81+3+%D0%BC%D0%BE%D0%B4+%D0%BD%D0%B0+%D1%81%D0%B5%D0%BA%D1%81&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654706_skachat_nfs_most_vanted_s_russkimi_mashinami.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654676_chek_order_sberbanka_shrift.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654677_skachat_gta_san_andreas_multipleer_03e_torrent.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000563f9.bin
4945c724e830e7fc11faba0d665719d7a5230867f6eff2a2ef2076b40492f8e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x563F9 7480 bytes
font_01_sfnt_off00057936.bin
3aa5195e78ac666c3f16c83e14059e4499b1f8af953a9a933df4baf8b16f21b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57936 13320 bytes

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