Malicious PDF — malware analysis report

Static analysis result for SHA-256 9553cd08b80722ce…

MALICIOUS

PDF

363.9 KB Created: 2015-08-28 13:33:16 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 1f9068f5681e63f206e3c7615f7c5c19 SHA-1: 61f0d91046cb9b094627ce21cfacf518f1a6bbc8 SHA-256: 9553cd08b80722ce2b1a42ab0a8d0a1342dea974805cd14d545689b50bfd8d11
90 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to botcraftman.ru. This indicates the document is designed to lure users to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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%9A%D0%BE%D0%BD%D1%81%D1%82%D1%80%D1%83%D0%BA%D1%82%D0%BE%D1%80+%D0%BC%D1%83%D0%BB%D1%8C%D1%82%D1%84%D0%B8%D0%BB%D1%8C%D0%BC%D0%BE%D0%B2+%D0%BC%D1%83%D0%BB%D1%8C%D1%82%D0%B8-%D0%BF%D1%83%D0%BB%D1%8C%D1%82%D0%B8+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4803/4803719_kalkulyator__fyuzov__avr_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802903_stalker__dezertir__2_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4803/4803349_programmuy__dlya_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005683a.bin
2e4efdec403e528cbe34018c4c7b4a9ff25eee92fbe2ec9d336a08d9070db2f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5683A 8124 bytes
font_01_sfnt_off00057eea.bin
fe612cbaced69db720ebd78e6874667e699d539c5b08197b01505474bf645a86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57EEA 16128 bytes

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