Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cb46b7bc7e681c5…

MALICIOUS

PDF

355.6 KB Created: 2015-08-28 11:48:39 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 340e033f48f57557eff55789aea5bae3 SHA-1: 824ffed71a74b44f94ca194737b4d9ea84e4efba SHA-256: 1cb46b7bc7e681c5c0da31b816aea6ee6a10e517d716ed7a46cf0e37097f1689
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 as malicious and contains a link to a known malicious redirector. The document body is heavily obfuscated and does not provide clear user-facing content, but the presence of the malicious URL strongly suggests a phishing or malware delivery attempt. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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%B8%D0%B3%D1%80%D1%8B+%D1%82%D0%B0%D0%BD%D0%BA%D0%B8+%D0%BE%D0%BD%D0%BB%D0%B0%D0%B9%D0%BD+%D0%BF%D1%80%D0%BE%D1%85%D0%BE%D0%B6%D0%B4%D0%B5%D0%BD%D0%B8%D0%B5&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802622_18__wheels__of_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802519_super__su_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802577_skachat__drayver__dlya_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00054246.bin
05130833bda8f8c72fed5307a9191a870978ab8a697226e050b1c3e9a85f968c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54246 9180 bytes
font_01_sfnt_off00055d32.bin
2f64708168db4604e55239321ff6690544939fc3bfea5f03441131a46c6147b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55D32 16408 bytes

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