Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9f4ca37cacd3ba6…

MALICIOUS

PDF

361.7 KB Created: 2015-08-21 09:17:36 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: cffe4f976d3067c7af41a9b185e22f45 SHA-1: bc55ac757f6d07ea7364a7c469267b9f9d049670 SHA-256: b9f4ca37cacd3ba696c3099d89b40b8b0548175e1d5a4d40876bd891f03b48a1
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, botcraftman.ru, which is likely intended to deliver a secondary payload or lead the user to a phishing site. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, appears to contain metadata related to Solidworks, suggesting a lure to trick users into downloading potentially unwanted software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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=solidworks+%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+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%B0%D1%8F+%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%8F+%D0%B1%D0%B5%D0%B7+%D1%80%D0%B5%D0%B3%D0%B8%D1%81%D1%82%D1%80%D0%B0%D1%86%D0%B8%D0%B8&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654676_chek_order_sberbanka_shrift.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654704_24_demona_billi_milligana_skachat_torrent.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055e7d.bin
e56d838ef82d003f215bd8594bd117879797fc8ed0b9a09e686183424bd4892c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55E7D 9344 bytes
font_01_sfnt_off0005796f.bin
37ebc8e093c8baa8a286f5f269536ab843a09b6b9075db9a1a618e8d8717d04c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5796F 14376 bytes

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