Malicious PDF — malware analysis report

Static analysis result for SHA-256 01b3af669c1db8e1…

MALICIOUS

PDF

378.4 KB Created: 2015-08-28 15:18:10 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 227ff6a6c9b9ce6313ddf4a4aed24a92 SHA-1: c760b0981a848d9a182b3c21e5c3eef053b67452 SHA-256: 01b3af669c1db8e1ebd757379f8c20043acfae6fd88c6b6fbcec4327f009a3bb
92 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The PDF document contains a critical heuristic firing for a malicious redirector link, pointing to 'http://botcraftman.ru/'. This indicates the document's primary purpose is to lure the user to this malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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%BD%D0%B5+%D0%BC%D0%BE%D0%B3%D1%83+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BF%D1%80%D0%B8%D0%BB%D0%BE%D0%B6%D0%B5%D0%BD%D0%B8%D1%8F+%D0%BD%D0%B0+%D0%B0%D0%B9%D1%84%D0%BE%D0%BD&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4803/4803516_velesova__svetlana__priklyucheniya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4803/4803129_tematicheskie__i__itogovuye_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4804/4804998_maynkraft__igrat__onlayn_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005a443.bin
342074c0a2f5970197a55176ea3c31cb07cd443269691c8da771015bff01aa40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A443 8688 bytes
font_01_sfnt_off0005bd66.bin
75b6240291dfcaeb7ec9fee310e4715470e13089e00deef4df4763a0191637bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BD66 13920 bytes

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