Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfff636e2852177e…

MALICIOUS

PDF

379.8 KB Created: 2015-08-28 11:34:30 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: c9b2ed01355f013c0acbbb45bf26b81e SHA-1: 9a09f7add381941edadea08980e2ed2bc64da290 SHA-256: dfff636e2852177e634252121a197c8293a0f374994b319a5f2e42c3450b7fc9
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. This indicates the document is likely a lure to direct users to a malicious website. No scripts were extracted from this sample, and the document body was unreadable binary data.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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+%D1%84%D0%B8%D0%BB%D1%8C%D0%BC+%D0%BB%D1%8E%D0%B4%D0%B8+%D0%B8%D0%BA%D1%81+3+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802397_podgotovka__k__egye_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802409_futazh__vuypiska__iz_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802401_gta__mta_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005a952.bin
2498ede8244d7b0c61d71a162d495025ed506785d1fadeb3dc9ef741d9d88556		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A952 8408 bytes
font_01_sfnt_off0005c198.bin
a95a3ca9e496df045da3006b26cd18b3d2bf61577176d3a33f7d3757e5a33fe2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C198 14704 bytes

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