Malicious PDF — malware analysis report

Static analysis result for SHA-256 259ec4e88d4f05db…

MALICIOUS

PDF

354.0 KB Created: 2015-08-28 01:14:21 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: e5cc848f10247d6b49c0154f9a75097c SHA-1: c677467362b8100a6c2ae39db6a81e01810848f3 SHA-256: 259ec4e88d4f05db3b3c392fb97387ca6bd9df7c46ea28b61190e9dd00d1e70a
92 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. The embedded URL `http://botcraftman.ru/?lip&keyword=%D0%BA%D1%83%D0%BC%D0%B8-%D0%BA%D1%83%D0%BC%D0%B8+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D0%B2%D1%81%D0%B5+%D1%81%D0%B5%D1%80%D0%B8%D0%B8&charset=utf-8` is the primary indicator of malicious intent, suggesting a redirection to a harmful site. No scripts were extracted, limiting further analysis of the execution chain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9897

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%D1%83%D0%BC%D0%B8-%D0%BA%D1%83%D0%BC%D0%B8+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D0%B2%D1%81%D0%B5+%D1%81%D0%B5%D1%80%D0%B8%D0%B8&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4789/4789735_mount__and__blade_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4789/4789704_kak__oformit__ugolok_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4789/4789230_pro__chervonu__knigu_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053fa9.bin
86c3da780a6de89e0f136d0577107b364e699bed7942780013f3261522fe4ef9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53FA9 8412 bytes
font_01_sfnt_off00055802.bin
5c6c68296796881745d06e88526379a37ed57682c1a3dab1c2c90dd7864f9195		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55802 15828 bytes

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