Malicious PDF — malware analysis report

Static analysis result for SHA-256 564f9bb45f413431…

MALICIOUS

PDF

340.5 KB Created: 2015-08-26 09:56:42 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: b930606a4bb9b9a6f5609a7faa6b2cb1 SHA-1: a2b7a451f2c4e39350d36f56619fc4afa04f77d7 SHA-256: 564f9bb45f413431e216bcd73cb9311a4e31e1f66b289786eac989061b418ff7
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a critical heuristic indicating a link to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/..., is likely the initial stage of a phishing or malware delivery chain. No scripts were extracted, and the document body was unreadable, but the presence of the malicious URL is sufficient evidence for this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

Heuristics 2

  • 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.
  • 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%BB%D1%8E%D1%87+%D0%BD%D0%B0+%D0%BA%D0%B0%D1%81%D0%BF%D0%B5%D1%80%D1%81%D0%BA%D0%B8%D0%B9+60+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752005_skachat__cm_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751845_skachat__splinter__cell_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751954_mikroyekonomika__uchebnik_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00050b1d.bin
b2f0416e4b79d96a3dcf953c9cdae282409b109f226fcfea0f70326d2b090eac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50B1D 8156 bytes
font_01_sfnt_off000522b2.bin
14e3654c25ff532efb271832f181e1f6cd33870721787dfa6eca4384a6e5f19e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x522B2 15692 bytes

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