Malicious PDF — malware analysis report

Static analysis result for SHA-256 8db66c7c484f4a61…

MALICIOUS

PDF

362.8 KB Created: 2015-08-26 09:57:01 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 00bf8e348e77353d65322c0e3cc63fb8 SHA-1: 3d6f1c53976d1a95c999827dd38b5dc47a664cc3 SHA-256: 8db66c7c484f4a614d63896881db8473e38f9f372347a6a09fa8d6ad13f9b18a
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. While no scripts were extracted, the presence of a malicious URL is a strong indicator of a phishing or redirection attack.

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=%D0%B3%D1%80%D0%B8%D0%B3%D0%BE%D1%80%D0%B8%D0%B9+%D0%BB%D0%B5%D0%BF%D1%81+%D1%82%D0%B5%D0%BA%D1%81%D1%82%D1%8B+%D0%BF%D0%B5%D1%81%D0%B5%D0%BD&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751585_skachat__povelitel__zonuy_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751590_skachat__videomach__na_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752092_kim__po__matematike_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056330.bin
8db54be8e054a44b0ae93eb75e3930c002aace158eeb34b3c3747502a4f35f4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56330 9808 bytes
font_01_sfnt_off00057d99.bin
6b30503628badad9a92d0d5bae1bdc9b3f3f7e8c13e475c56a653bf2e73d1ec1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57D99 15112 bytes

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