Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b84a0ba321a1982…

MALICIOUS

PDF

368.8 KB Created: 2015-08-23 21:27:54 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 2cdfdea8258ea1b2543bb511d2969085 SHA-1: da285d865115a408a5af6da6c22301c5d1d13d86 SHA-256: 5b84a0ba321a1982cd3fa1a684cb02f87c2d9c57abbcdb4524703104298f3ffe
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by a machine learning classifier and contains a link to known malicious redirector infrastructure. While no scripts were extracted, the presence of a malicious URL suggests the document is designed to redirect users to a harmful site, likely for phishing or malware distribution. The document body was heavily obfuscated and unreadable.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9940

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%A1%D0%BF%D1%80%D0%B0%D0%B2%D0%BA%D0%B0+%D0%B2+%D1%86%D0%B5%D0%BD%D1%82%D1%80+%D0%B7%D0%B0%D0%BD%D1%8F%D1%82%D0%BE%D1%81%D1%82%D0%B8+%D0%B4%D0%BE%D0%B4%D0%B0%D1%82%D0%BE%D0%BA+3+%D1%83%D0%BA%D1%80%D0%B0%D0%B8%D0%BD%D0%B0+%D0%B1%D0%BB%D0%B0%D0%BD%D0%BA&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690033_dizayn__kvartir__studiy_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690154_windows__7__skachat_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690345_fotografirovatsya__na__veb_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000578d8.bin
261bdd0274da94084670c3b34fece2284851ebc2309ff5e02e7bfdf786bfcf10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x578D8 8836 bytes
font_01_sfnt_off000592b5.bin
dc03a585d4c21c7a03c24bdfbb2a81668ef929bf6f08abdaa9c982fadb887e84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x592B5 15380 bytes

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