Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b0e76de70e8eaf2…

MALICIOUS

PDF

352.8 KB Created: 2015-08-26 18:38:02 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: da75538dff3b3628113724bba5a4a75d SHA-1: 0dea7c719a3f504c76cbcb1a5f4c0cac64dc71d0 SHA-256: 9b0e76de70e8eaf264a5c229add0ec89c74d7dd8911052a40afb05be3bf944d4
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector infrastructure. This suggests the document is designed to lure users to a harmful website. 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%D1%82%D0%B0%D0%BB%D0%BA%D0%B5%D1%80+%D0%B7%D0%BE%D0%B2+%D0%BF%D1%80%D0%B8%D0%BF%D1%8F%D1%82%D0%B8+%D0%BD%D0%B0+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4762/4762111_vitamaxe__probiotic__narine_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4762/4762110_word__dlya__android_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4762/4762149_igruy__dlya__sony_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053c9c.bin
9d7e981a7d7c9aa49703dfd2ee9df8ad82a923e11a57a3342b52e0f021fce98d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53C9C 7492 bytes
font_01_sfnt_off00055299.bin
dff70bb4e961d9f4852fdf8ec28aad8f712651baaea1408aeeba29fe314e5ac8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55299 16668 bytes

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