Malicious PDF — malware analysis report

Static analysis result for SHA-256 c41209ca260c285c…

MALICIOUS

PDF

354.6 KB Created: 2015-08-28 11:53:21 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: d345d7e2405b5907b353d332cd03354d SHA-1: 4ad760cc07ad5606b7eb963c93e180d8f646e4e8 SHA-256: c41209ca260c285c0013bb2f38bcc7f4cead87efc5a4725d6c9564d4d2c805b2
90 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to botcraftman.ru. This indicates the document is designed to lure users to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9908

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=%D1%84%D0%BE%D1%80%D0%BC%D0%B0+%D0%BF%D0%BE%D0%BB%D0%B8%D1%86%D0%B8%D0%B8+%D0%BD%D0%BE%D0%B2%D0%BE%D0%B3%D0%BE+%D0%BE%D0%B1%D1%80%D0%B0%D0%B7%D1%86%D0%B0+2013+%D0%BF%D0%BE%D0%B3%D0%BE%D0%BD%D1%8B+%D0%BF%D0%B5%D1%82%D0%BB%D0%B8%D1%86%D1%8B+%D1%81%D1%82%D0%B0%D1%80%D1%88%D0%B8%D0%BD%D0%B0+%D1%84%D0%BE%D1%82%D0%BE&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802448_winzip__skachat_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802725_skachati__maynkraft__152_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802702_obrazec__zayavleniya__na_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054246.bin
fe6642b16c42b9aba228d71c14d8d5bbfd73f5f0d3a2bf3f8a1053680f7676e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54246 8340 bytes
font_01_sfnt_off00055adb.bin
1fb6642d2ae9c6c6789216fb5c24336109dabf0a6f72fc64f268183467e6ca11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55ADB 15184 bytes

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