Malicious PDF — malware analysis report

Static analysis result for SHA-256 937261914e110da8…

MALICIOUS

PDF

359.6 KB Created: 2015-08-28 11:33:32 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 3795a6684d21ca85aaeacce58b15809b SHA-1: c793b60f9ee1e722345119ee8fb4b1d4b07e9255 SHA-256: 937261914e110da886ee78e4f27eeeef8676576a8278a8a7791bbe8a6fabfd7e
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a critical heuristic firing for a malicious redirector link. The embedded URL http://botcraftman.ru/ is identified as a known malicious redirector. No scripts were extracted from this sample, but the presence of the malicious link strongly suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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=%D1%81%D1%86%D0%B5%D0%BD%D0%B0%D1%80%D0%B8%D0%B9+%D0%BF%D1%80%D0%B0%D0%B7%D0%B4%D0%BD%D0%B8%D0%BA%D0%B0+1+%D1%81%D0%B5%D0%BD%D1%82%D1%8F%D0%B1%D1%80%D1%8F+%D0%B2+%D1%88%D0%BA%D0%BE%D0%BB%D0%B5&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802379_skachat__deadpool_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802391_raspisanie__avtobusov__sarapul_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4802/4802412_vladimir__rackin_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055933.bin
8d25d3d08c8a5b6492c67e7cd33cc6864124abfb637f1da20e6fc86b7b70c6e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55933 8408 bytes
font_01_sfnt_off000571a9.bin
48f71d8c74b7d08ab10bae33bb8d6e2a43a2d4249c0288e23c545454b4ca991b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x571A9 14788 bytes

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