Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc2ad551e861a53f…

MALICIOUS

PDF

382.6 KB Created: 2015-08-25 22:11:20 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: bf0363a74b1278ab554b1234f7fc31d4 SHA-1: 55bf3147ae1eee082a54ba98cbbeb85d91e2c6e9 SHA-256: cc2ad551e861a53ffb9b7bc7c773f25942feb8d039b0ae5dbb6fec2a9b4127fb
90 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link T1566.002 Spearphishing Attachment

The PDF contains a heuristic firing indicating a link to known malicious redirector infrastructure. The embedded URL, http://botcraftman.ru/, is associated with this malicious activity. The document body, though heavily obfuscated, contains keywords related to Windows 7 activation, suggesting a lure for users seeking software activation. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

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%BA%D0%BB%D1%8E%D1%87+%D0%B4%D0%BB%D1%8F+%D0%B0%D0%BA%D1%82%D0%B8%D0%B2%D0%B0%D1%86%D0%B8%D0%B8+windows+7+%D0%B4%D0%BE%D0%BC%D0%B0%D1%88%D0%BD%D1%8F%D1%8F+%D1%80%D0%B0%D1%81%D1%88%D0%B8%D1%80%D0%B5%D0%BD%D0%BD%D0%B0%D1%8F&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740635_klyuchi__dlya__adguard_59_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740627_anti_sim_lockzip__17643__kb_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740670_kniga__fanfikov__martina_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005ae44.bin
d7f6dbfd1a1efd7ae6bee522a46b3b9a9094364e30fce25efadaae47afdcb2ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AE44 9252 bytes
font_01_sfnt_off0005c85b.bin
43ae99fd399f8971c3e90191b347d28983e81bd0e870420e6b7b91835bc3ab64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C85B 16528 bytes

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