Malicious PDF — malware analysis report

Static analysis result for SHA-256 bda5340cf3173444…

MALICIOUS

PDF

348.5 KB Created: 2015-08-28 22:05:00 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: a69e4ea9d6a9eb5871f769810b5f260b SHA-1: e6e694ee68693e3374c60efc02ab368aaaba0947 SHA-256: bda5340cf31734441ba86524d459d25102b8212051052a6a5101cd6605c375ea
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF was flagged by a machine learning classifier and contains a direct link to a known malicious redirector infrastructure. This indicates the document is designed to lure users to a harmful website. No scripts were extracted, and the document body was heavily obfuscated, preventing 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=%D0%B4%D0%BE%D0%B3%D0%BE%D0%B2%D0%BE%D1%80+%D0%BE%D0%B1%D0%B5%D1%89%D0%B0%D0%BD%D0%B8%D1%8F+%D0%B4%D0%B0%D1%80%D0%B5%D0%BD%D0%B8%D1%8F+%D0%B2+%D0%B1%D1%83%D0%B4%D1%83%D1%89%D0%B5%D0%BC+%D0%BE%D0%B1%D1%80%D0%B0%D0%B7%D0%B5%D1%86&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4810/4810424_miruy__tani__grotter_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4812/4812008_rabochaya__programma__po_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4813/4813368_audioknigi__dlya__ipod_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00052bf4.bin
9582a0fc59ba7318c7a5c417928153ea65065be75a10691dae6f6f1f31cbec6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52BF4 8920 bytes
font_01_sfnt_off000545e0.bin
17ceb4cfc46e5595fa70eb48508ab3b2e54f440404e0c0a18cb625f37931223f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x545E0 14332 bytes

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