Malicious PDF — malware analysis report

Static analysis result for SHA-256 442968c003fce761…

MALICIOUS

PDF

364.6 KB Created: 2015-08-29 01:46:00 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: aa8c0ad0fdf65dc2b7a0cbe70ca80d74 SHA-1: b152d9c8422ef42d2e4b565a73ecc7d58a50681f SHA-256: 442968c003fce7611ab97ece7ceb71ba688ce591c1be23140221ca481a886727
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, indicating an attempt to lure the user to a harmful site. The ML classifier also flagged this PDF with high confidence. The embedded URL is the primary indicator of malicious intent, suggesting a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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%B0%D0%BA%D1%82%D0%B8%D0%B2%D0%B0%D1%86%D0%B8%D1%8F+windows+7+nnm-club&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/7//4818/4818357_obrazec__obzhalovaniya__postanovleniya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4818/4818163_yugozapadnuyy__avtovokzal__voronezh_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4818/4818142_natalya__mitina__dizayn_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00056c47.bin
5c5bd1c9e4ebc04708026b8bc79115215cba68a18ee48f34fa804e2403583e42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56C47 8972 bytes
font_01_sfnt_off0005857e.bin
f069fbd0a5a94fb4cdd0d95dcb514b695244ac580c77f81f2d30dfae3faac910		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5857E 14528 bytes

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