Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3a9c9b83c72da8e…

MALICIOUS

PDF

361.4 KB Created: 2015-08-28 11:29:58 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: af712640edbea4aa6c1a6e193d99d503 SHA-1: f2481fb608afd869278e29bb748b823595dae47f SHA-256: d3a9c9b83c72da8ea19e6d1de7e9d5eb13b8652f5515348541a54299f389df39
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector infrastructure. This indicates the document is likely a lure designed to redirect users to a malicious website for phishing or malware delivery. No scripts were extracted, but the presence of the malicious URL is a high-confidence indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D0%B0+%D0%B4%D0%BB%D1%8F+%D1%80%D0%B5%D0%B4%D0%B0%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D1%8F+%D0%BF%D0%B5%D1%81%D0%B5%D0%BD&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802358_kak__vosstanovit__udalennuye_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802367_anketa__dlya__klienta_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802370_himicheskiy__sostav__moloka_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056125.bin
c04f0c8cbd2f690c1254ec51c7043a71133c4d59c03e8f1b5682a779d867f813		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56125 9028 bytes
font_01_sfnt_off00057ab4.bin
ee1de971b1e7236e92f93b345f61519609304b723a5f16ff42ffd0d372a07eab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57AB4 13640 bytes

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