Malicious PDF — malware analysis report

Static analysis result for SHA-256 046a676792347e34…

MALICIOUS

PDF

352.7 KB Created: 2015-08-26 09:50:22 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 631f74dc94c0c17f4416897e7854d0e7 SHA-1: 3b739c6d3f1c582f55254e19de0b57a88e26de9e SHA-256: 046a676792347e34e0b300f970191e4e7495d8977e424dd14512887ed1675084
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL 'http://botcraftman.ru/?lip&keyword=ezdrummer+metal+machine+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8' is the primary indicator of malicious intent. While no scripts were extracted, the PDF structure itself facilitates the redirection, aligning with spearphishing attachment tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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=ezdrummer+metal+machine+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751822_skachat__kartuy__dlya_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751559_kalendarnotematicheskoe__planirovanie__po_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751473_sorevnovaniya__universiaduy_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053b83.bin
10a0ba78aaaa408a516c343f28ef77627ce3d455e71e84faaa87f90bd2257278		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53B83 9276 bytes
font_01_sfnt_off000554f2.bin
ed970e8f0717fcd32f8beea165d3377c29ba6d83b79496dbce826a84c54c8f06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x554F2 15244 bytes

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