Malicious PDF — malware analysis report

Static analysis result for SHA-256 82ac9867d0aa5c96…

MALICIOUS

PDF

383.3 KB Created: 2015-08-23 21:44:42 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: a8a5235263b24f1ed4ab9952a62a7d1a SHA-1: 4d0dffdbc199128c93b5dd26b5594f6078bfd590 SHA-256: 82ac9867d0aa5c960aeee46f88704d2772d04d5730fcf84f46ceb87135452757
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and contains a link to a known malicious redirector. This suggests the document is designed to lure the user to a malicious website, likely for phishing or malware delivery. No scripts were extracted, but the presence of a malicious URL is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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%9F%D0%BE%D0%BB%D0%BE%D0%B6%D0%B5%D0%BD%D0%B8%D0%B5+%D0%BE+%D0%B3%D0%B0%D0%B7%D0%BE%D1%81%D0%BF%D0%B0%D1%81%D0%B0%D1%82%D0%B5%D0%BB%D1%8C%D0%BD%D0%BE%D0%BC+%D1%84%D0%BE%D1%80%D0%BC%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B8&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690234_simulyator_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690540_viktorina__po__matematike_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4690/4690405_skachat__pesni__toni_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005b420.bin
d4b05eb8dd96d9d1351216940340c06b6628b3edacc39080ea7560c0cb51a455		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B420 8276 bytes
font_01_sfnt_off0005cc64.bin
93ecefb3ac286e3247c2b392982b696128a306e1276742536b9cf1ddb78b057e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC64 16040 bytes

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