Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f592944ea3091bb…

MALICIOUS

PDF

364.2 KB Created: 2015-08-23 23:44:51 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: bccf77565a99e4b0f32875327b220266 SHA-1: 832639bd8026767c11218c9825d515080763cc82 SHA-256: 3f592944ea3091bbc2adbfdccac522a893b869c6685ba87b948698a037bc23b3
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure at http://botcraftman.ru/. This heuristic firing, combined with the ML classifier's high confidence score, strongly indicates malicious intent. The primary purpose appears to be directing the user to a potentially harmful external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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=3%D0%B4+%D1%8D%D1%84%D1%84%D0%B5%D0%BA%D1%82%D1%8B+%D1%81+%D0%BC%D0%B0%D0%BA%D1%81%D0%B8%D0%BC%D0%B0%D0%BB%D1%8C%D0%BD%D1%8B%D0%BC+%D0%B2%D1%8B%D0%BB%D0%B5%D1%82%D0%BE%D0%BC+%D0%B8%D0%B7+%D1%8D%D0%BA%D1%80%D0%B0%D0%BD%D0%B0+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4692/4692995_pourochnoe__planirovanie__po_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693401_skin__nevestuy__v_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693112_vk__avision__skachat_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056b30.bin
73a3bae051063fbfd911c32778d1320ab6f2e42a5414393c2d13d98a17ae646d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56B30 9020 bytes
font_01_sfnt_off000584d0.bin
c394db06a9d49168eff4a87f96b1d70242af2ea74f85bc4ac9937ca24f42416d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x584D0 14168 bytes

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