Malicious PDF — malware analysis report

Static analysis result for SHA-256 51e99da5cf252bd2…

MALICIOUS

PDF

358.8 KB Created: 2015-08-28 11:30:41 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: e0614ba334a964269a3ebdaed6850860 SHA-1: ab152b6ac2cbbd779a9663953bbd18d846385a0f SHA-256: 51e99da5cf252bd223cb808a29862b0b0012207d6d4f772c122ab8a06a8550d2
92 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, http://botcraftman.ru/. This indicates an attempt to lure the user to a malicious site. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%87%D0%B8%D1%82+%D0%BD%D0%B0+%D0%B4%D0%B5%D0%BD%D1%8C%D0%B3%D0%B8+%D0%B2+%D1%81%D0%B0%D0%BC%D0%BF+03+z&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802375_skachat__kontrolnuye__rabotuy_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802359_panorama__romanov__o_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802364_google__chrome__poslednyaya_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055234.bin
50104bbba9fd51db10461c76471249c131030dfc5549cc2cc94af1a3739f33ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55234 9108 bytes
font_01_sfnt_off00056c4b.bin
65b9c2ca7ce3d0c79b69f7ab546f2494d3b0ec89d0a63aaf6abc972a7330faaa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56C4B 15056 bytes

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