Malicious PDF — malware analysis report

Static analysis result for SHA-256 6033c3b44ac08349…

MALICIOUS

PDF

341.5 KB Created: 2015-08-28 18:22:16 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 37cfd29c40f8f2f7f7b8d937b79d16e4 SHA-1: 821907d43626c23e0aa10a3550949b24ee2a4b1e SHA-256: 6033c3b44ac08349d3b9f0e13de3e95598a457eebd8d265280d9418b5db759d2
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL points to botcraftman.ru, which is flagged as malicious. This suggests the document's primary purpose is to lure the user to this site, likely for a phishing attack or to download further malicious content. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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=book+antiqua+%D1%88%D1%80%D0%B8%D1%84%D1%82+%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//4809/4809356_d__link__dir300_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809127_kontrolnaya__rabota__po_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809745_reshebnik__po__ritorike_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00050c24.bin
c185242869e9bb016b37c3098d7c24e576620f8db254ce04d05e34821c86828a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50C24 9252 bytes
font_01_sfnt_off00052615.bin
1673f5f3472e0f17657279c9afd3d6cd9eee72ab2d60cb1888ec625d950485f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52615 15324 bytes

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