Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d7a1ef7578cae6c…

MALICIOUS

PDF

355.6 KB Created: 2015-08-24 00:33:35 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: b0dee97d3079dc1ed1c4ceeb319659d2 SHA-1: e52672b36da7fec58c9cf9126798a67397926d54 SHA-256: 4d7a1ef7578cae6c2e6fabe9381aa9d0450d368bf30a4cd18f7289a4780801d0
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, 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 sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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+mortal+kombat+project+483+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693876_skachat__pleer__na_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693887_laboratornaya__rabota__po_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693845_koduy__na__gta_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005468c.bin
31a0aab73b927730b2af38a20bb6516c1dcbdd4157ef8d4fa2f743f4909f68dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5468C 9736 bytes
font_01_sfnt_off000560da.bin
46e32569c1b425b64caa5a42c9a830d28c454a27f8836a61e9ac73b47c704b5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x560DA 15204 bytes

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