Malicious PDF — malware analysis report

Static analysis result for SHA-256 e853ca4b317e1787…

MALICIOUS

PDF

365.2 KB Created: 2015-08-28 13:36:31 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 9948dea9d97b11ea9ecc8c6b38935c17 SHA-1: 3ddc736d2b386e54cf43d3b30283fa9bab75fa7a SHA-256: e853ca4b317e1787a8f5e33eeeef9dc81cbdfa8ceb3b15e610529cbb75710cfc
90 Risk Score

Malware Insights

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

The PDF contains an embedded link to a known malicious redirector. The ML classifier also flagged this PDF with high confidence. The primary malicious indicator is the URL http://botcraftman.ru/, which is likely used to direct users to a phishing page or download further malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE+%D1%83%D1%80%D0%B0%D0%BB%D1%8C%D1%81%D0%BA%D0%B8%D0%B5+%D0%BF%D0%B5%D0%BB%D1%8C%D0%BC%D0%B5%D0%BD%D0%B8+%D0%B1%D0%B0%D0%B1%D1%83%D1%88%D0%BA%D0%B0+%D0%B8+%D0%B2%D0%BD%D1%83%D0%BA&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4804/4804783_ne__rabotaet__vibraciya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4804/4804155_besplatnuye__akkauntuy__v_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4804/4804225_skachat__filmuy__besplatno_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056f7a.bin
f35d09e9a046eb1d05a1c457488252942baa663cd44b7b695962eb85302ee1f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56F7A 7872 bytes
font_01_sfnt_off00058647.bin
26ae8f7afeaa6eebb24a953304683c95ef1772c36ea515db448abe394554b63b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58647 15228 bytes

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