Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8ae1728686bf834…

MALICIOUS

PDF

348.9 KB Created: 2015-08-25 22:21:30 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: e32adf836de6067b94f7e6dc2b01c4cb SHA-1: 5974d6fa40397d73df83575ea6d91be8d08f9db0 SHA-256: c8ae1728686bf834238f1bbd6cfac51bd1566c9dfbaba35c62273cb9e3cdca2c
92 Risk Score

Malware Insights

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

The PDF document was flagged by a machine learning classifier and contains a critical heuristic indicating a link to a known malicious redirector. The embedded URL `http://botcraftman.ru/...` is the primary indicator of malicious intent. No scripts were extracted, and the document body was unreadable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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%82%D0%BE%D0%B3%D0%BE%D0%B2%D1%8B%D0%B9+%D1%82%D0%B5%D1%81%D1%82+%D0%BF%D0%BE+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC%D1%83+%D1%8F%D0%B7%D1%8B%D0%BA%D1%83+10+%D0%BA%D0%BB%D0%B0%D1%81%D1%81&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740622_igruy__gonki__forsazh_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740850_skachat__igru__pure_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4740/4740841_nokia__x101_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00052d7d.bin
7d80170bd03b841608335768207ab97a581d1e880b6a7e044a617d89f119e849		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52D7D 8700 bytes
font_01_sfnt_off000546bb.bin
1ef4b929a19c692af64f3a10a847b519088a9354f7c6a169db400b3dda4db5fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x546BB 15068 bytes

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