Malicious PDF — malware analysis report

Static analysis result for SHA-256 a953d94e76171d77…

MALICIOUS

PDF

365.3 KB Created: 2015-08-20 11:34:30 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: a0d7515481d9b8f1f96296839e867500 SHA-1: e6a7e9f3a904ac4852da04714bec078aacf27a32 SHA-256: a953d94e76171d770037bbcfef7ab8fcd8f38879154eb2c064537f0ea3ed25d3
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector domain, botcraftman.ru. This link is presented within the document's content, likely as a lure to trick the user into visiting the malicious site. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, and the document body was heavily truncated and obfuscated, preventing further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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=medal+of+honor+allied+assault+spearhead+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4639/4639322_shpargalki_teoreticheskie_osnovuy_kvalifikacii_prestupleniy.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4640/4640543_scenariy_parodiy_na_zvezd_yestraduy.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4639/4639487_klyuch_driver_agent.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000568b3.bin
4e2b02b4eb0af4adc659fe7725a0f63c96683e47d0e9e9b2ba1c17b210fee0ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x568B3 9676 bytes
font_01_sfnt_off0005832e.bin
72f4839880a0a0eb94b21254bb1f61d534efd4581635f86b053aa8f2e7799a35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5832E 16500 bytes

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