Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0fc16fa26f4b91d…

MALICIOUS

PDF

368.3 KB Created: 2015-08-25 22:17:13 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 32e809f0c507fdafbf58ea6d6c309c6f SHA-1: 5c586d1cce4440667eb97b4acd5128fd1037a2e0 SHA-256: f0fc16fa26f4b91d35247c93628c747c342869fc714289ed40c7b12a42779b6b
90 Risk Score

Malware Insights

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

The PDF contains an embedded link to a known malicious redirector, http://botcraftman.ru/. This heuristic firing, combined with the ML classifier's high confidence, strongly suggests the document is designed to lure users to a malicious site. No scripts were extracted, but the primary attack vector appears to be the malicious URL embedded within the PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9940

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%B8%D1%80%D0%BE%D0%BD%D0%B8%D1%8F+%D1%81%D1%83%D0%B4%D1%8C%D0%B1%D1%8B+%D0%B8%D0%BB%D0%B8+%D1%81+%D0%BB%D0%B5%D0%B3%D0%BA%D0%B8%D0%BC+%D0%BF%D0%B0%D1%80%D0%BE%D0%BC+2+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740743_shablonuy__dlya__prezentaciy_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740554_farming__simulator__2013_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740623_obrazec__raspiski__o_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00057607.bin
c31036c21fc3b40bb9189d41673b9919c05987e4de3ad52e4393455982d1e1da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57607 8460 bytes
font_01_sfnt_off00058ea7.bin
40ff39a2df3d51f9a11a3c7d63cc332e51ff19568b7037a207e0aaf4b7107d7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58EA7 16380 bytes

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