Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cc9af83d2909987…

MALICIOUS

PDF

355.1 KB Created: 2015-08-25 22:16:39 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 27917cf22fb33c1f212020668b90c7ee SHA-1: 0a3743f365a7f2c82b28a1fe8e854b8fc2134c8e SHA-256: 4cc9af83d2909987c502f4366ac017b9be9d0bfe1e0a1a4f668f02cf85ee01ba
92 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, 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 presence of a malicious URL is sufficient evidence for this assessment.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BF%D1%80%D0%B5%D0%B4%D0%B2%D0%B0%D1%80%D0%B8%D1%82%D0%B5%D0%BB%D1%8C%D0%BD%D1%8B%D0%B9+%D0%B4%D0%BE%D0%B3%D0%BE%D0%B2%D0%BE%D1%80+%D0%BA%D1%83%D0%BF%D0%BB%D0%B8-%D0%BF%D1%80%D0%BE%D0%B4%D0%B0%D0%B6%D0%B8+%D0%B7%D0%B5%D0%BC%D0%B5%D0%BB%D1%8C%D0%BD%D0%BE%D0%B3%D0%BE+%D1%83%D1%87%D0%B0%D1%81%D1%82%D0%BA%D0%B0&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740685_skachat__besplatno__torrent_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740669_plan__lomonosova__diskografiya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740644_samouchitel__po__buhgalterskomu_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053f14.bin
27434f57a0206dc2d9c504e6f60b2992e9d73b9e9be4814bf40c502a82b1102f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53F14 11096 bytes
font_01_sfnt_off00055e69.bin
1f47e3342e31b04d9ddf1f5d774e9027235aee95dba7eae2e1e21d6f524826ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55E69 14828 bytes

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