Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9c0f2f913beb122…

MALICIOUS

PDF

348.9 KB Created: 2015-08-25 15:23:16 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: d0c500502fcee198e3398a920aa99c35 SHA-1: 8854badbaf2710108d4cb5339223d8166d491d4b SHA-256: d9c0f2f913beb1227d11101cf4436df18718ee315006234c062043f56332c083
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 the primary indicator of compromise, likely serving as a gateway to a malicious payload or phishing site. No scripts were extracted, and the document body was truncated, limiting further analysis of the delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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%BE%D1%81%D1%8B+%D0%BF%D0%BE+%D0%B0%D0%BD%D0%B3%D0%BB%D0%B8%D0%B9%D1%81%D0%BA%D0%BE%D0%BC%D1%83+%D1%8F%D0%B7%D1%8B%D0%BA%D1%83+%D0%B4%D0%BB%D1%8F+%D1%81%D0%BF%D0%BE&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4731/4731125_spravka__dlya__bolnichnogo_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4731/4731230_skachat__albom__butuyrka_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4731/4731285_skachat__gonki__na_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053194.bin
5dfe706d6f396d49b8faeff07f3fdfa03b4a08fb399f6050f6081f6d4e835d04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53194 8100 bytes
font_01_sfnt_off000548b9.bin
5eb4417c58a6ce66edb500604b25cc5061013d0003f373e5f718114ac939e2cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x548B9 13552 bytes

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