Malicious PDF — malware analysis report

Static analysis result for SHA-256 6adecda81e94b2af…

MALICIOUS

PDF

370.1 KB Created: 2015-08-28 02:06:34 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: b5d275661de24fea8701bc1f19cdd5cf SHA-1: 649cd4c3b57a5968a8144a67c538bcd7cb486d60 SHA-256: 6adecda81e94b2af49421fa4a579123fe3709f71fa6f267fa02fe492c1946869
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector infrastructure, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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%BC%D0%B8%D1%8F%D0%B4%D0%B7%D0%B0%D0%BA%D0%B8+%D0%BC%D1%83%D0%BB%D1%8C%D1%82%D1%84%D0%B8%D0%BB%D1%8C%D0%BC%D1%8B+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4789/4789028_otvetuy__na__sbornik_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4790/4790707_skachat__besplatno__skayp_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4787/4787777_skachat__vh__dlya_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005811d.bin
ce7c8de76fde69d378e5ef489d6cd08d0c265c34fddbd9ad72fff06a0282ae16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5811D 8700 bytes
font_01_sfnt_off000599ea.bin
fc9b9203de94246674e9442fffde73ed9799cc2fdf501d15075faabf18ba1c75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x599EA 14828 bytes

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