Malicious PDF — malware analysis report

Static analysis result for SHA-256 0411fa313add3647…

MALICIOUS

PDF

349.9 KB Created: 2015-08-22 09:09:08 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 6bbc83221ff4ade07e50f94588a2bdb8 SHA-1: 1b7e303ae55e2533c13ecf30b3560944b1c6a50b SHA-256: 0411fa313add3647555428bc689dd05da29d4d09cb40f7f677fb12812e14ecc6
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the heuristic firings strongly suggest a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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=50+%D0%BE%D1%82%D1%82%D0%B5%D0%BD%D0%BA%D0%BE%D0%B2+%D1%81%D0%B2%D0%BE%D0%B1%D0%BE%D0%B4%D1%8B+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%BD%D0%B0+%D1%82%D0%B5%D0%BB%D0%B5%D1%84%D0%BE%D0%BD&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674697_skachat_blok_launcher_pro_dlya_maynkraft_080.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674629_swedll32_dll_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674554_skachat_makros_dlya_x7_warface_besplatno.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00052ce4.bin
c300180094073b9d049af98ab12343182705b5bfb5a8a0e8b4412ccd451856b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52CE4 8184 bytes
font_01_sfnt_off000544c4.bin
920565ed1137622444401ca4c4225af92c5cd739aecea6743081547742ee0546		 pdf-font-stream PDF embedded font (sfnt) at offset 0x544C4 16748 bytes

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