Malicious PDF — malware analysis report

Static analysis result for SHA-256 730bb320ced18398…

MALICIOUS

PDF

357.0 KB Created: 2015-08-22 08:50:44 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: f49233245d53f712f4d3bc9bb8d9fc4f SHA-1: 4e0d2bfcd994cee95bbf41fba7fe92d40466b769 SHA-256: 730bb320ced1839822cccc71cf4a1559f028d8bddf8bfc19d80d17cbee011b62
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lure users to a harmful site. ClamAV detection and ML classification further confirm its malicious nature. The embedded URL is the primary indicator of compromise, suggesting a dropper or phishing attempt.

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-8941834-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8941834-0
  • 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%BF%D1%80%D0%B0%D0%B2%D0%B0+root+%D0%B4%D0%BB%D1%8F+freedom+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674457_otvetuy_na_gia_po_literature_9_klass_2015.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674458_skachat_lyubimuye_buyvshimi_ne_buyvayut.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054e85.bin
05f4769d19149ff91199d96449232186da29b3586520d6f7ebda02df011a5ace		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54E85 8600 bytes
font_01_sfnt_off00056724.bin
b61f4d236919e87f5b298faffab39d82543172a8f8d790f9bf66b136e8f8a478		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56724 14632 bytes

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