Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab42025b3e7ae43e…

MALICIOUS

PDF

344.9 KB Created: 2015-08-26 20:13:35 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: a631e107b2acedec64c269ad3a13c9dc SHA-1: 7678fb1431406b5b513b4d0e975cc76028e5cc38 SHA-256: ab42025b3e7ae43ed2285541664dddc568cd72a3ff116aabccd66410ec19b646
90 Risk Score

Malware Insights

MITRE ATT&CK
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, and the document body was heavily obfuscated, preventing further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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+windows+xp+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+2015&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4763/4763716_besplatnuye__programmuy__fotoshopa_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4763/4763722_pwboot_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4763/4763193_yelektricheskaya__shema__yelektrovoza_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00051a89.bin
8235e688c715163fa9fbf8d1c2d6d8dca0978a82ac03bfa7243a8db22923acf5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51A89 9172 bytes
font_01_sfnt_off0005342f.bin
51b3d4cc625d235608853ae6a9e949c86f1c02718318a3d6c9396c02305fabeb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5342F 15624 bytes

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