Malicious PDF — malware analysis report

Static analysis result for SHA-256 f09b73e5122f4269…

MALICIOUS

PDF

359.8 KB Created: 2015-08-29 01:43:27 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 18fadec783dcc47c658f0b958727db74 SHA-1: d33a087023727aaed1f27ea779e48c69e2f1207f SHA-256: f09b73e5122f426971176d9cc7ce870f5e6670de0396b87138171728e17f87e6
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, botcraftman.ru. This heuristic, combined with the ML classifier's high confidence score, strongly suggests the PDF is designed to lure users to a malicious site. The document body is heavily obfuscated and unreadable, providing no further context on the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9919

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%B2%D0%BE%D1%81%D1%81%D1%82%D0%B0%D0%BD%D0%BE%D0%B2%D0%B8%D1%82%D1%8C+%D1%83%D0%B4%D0%B0%D0%BB%D0%B5%D0%BD%D0%BD%D1%8B%D0%B9+%D0%B2%D0%B8%D0%B4%D0%B6%D0%B5%D1%82+%D0%BD%D0%B0+%D1%82%D0%B5%D0%BB%D0%B5%D1%84%D0%BE%D0%BD%D0%B5+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4+%D0%BC%D1%82%D1%81faq&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4817/4817881_skachat__temuy__na_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4818/4818136_igrat__v__igru_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4818/4818463_antibanneruy__skachat_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055af9.bin
2bc990f55dd9a6c932d8b53eeec312c48029d5a9ce91e7a3aed1e578a596e226		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55AF9 8980 bytes
font_01_sfnt_off00057459.bin
687cf2925a20cd0ad67e570da9c13224bbddd8d9995bcaa8f64999de4d6f7c99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57459 13808 bytes

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