Malicious PDF — malware analysis report

Static analysis result for SHA-256 90e148e9c99cd936…

MALICIOUS

PDF

368.2 KB Created: 2015-08-24 00:47:07 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 11696add49c5cb0faaedd0020591eef2 SHA-1: b83b583ffe35a081fbf26c839c98c0afca5a2c3d SHA-256: 90e148e9c99cd9365bbd3f883d5527af9030f9c746f7b8993b1a76c75f975d59
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector infrastructure. The embedded URL is the primary indicator of malicious intent, suggesting the document is a lure to redirect users to a harmful site. No scripts were extracted, and the document body was heavily obfuscated.

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=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B0%D0%BB%D1%8C%D0%B1%D0%BE%D0%BC+%D0%B7%D0%B0%D0%B9%D1%86%D0%B5%D0%B2+%D0%BD%D0%B5%D1%82+2015&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693346_tekst__pesni__santa_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4694/4694244_chip__windows__xp_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693179_naborschik__teksta__bez_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005741c.bin
308a784d6e382ccd865df77e262189f8eebb9fd87d35c369f036d5495f533e5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5741C 8744 bytes
font_01_sfnt_off00058de3.bin
2d31c44c856ad1c7339447ed5cd571c9f216e8d5bca2d9b7750d7f5ca1e12311		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58DE3 16980 bytes

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