Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd42ded9119fbdf5…

MALICIOUS

PDF

364.2 KB Created: 2015-08-24 01:55:31 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: a4e0a6c9a618a334c943e852d53b35a4 SHA-1: bbd693e7a4ed83b7706f6789639ba5d9045474f1 SHA-256: bd42ded9119fbdf52634087961339058d49e1d89525f23e5ebfb33792816f5ff
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded URL that is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. While no scripts were explicitly extracted, the presence of a malicious URL within a PDF document suggests an attempt to lure the user to a compromised site, likely for further exploitation or credential harvesting.

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%BE%D1%82%D1%87%D0%B5%D1%82+%D0%BE+%D0%BF%D0%BD%D1%80+%D1%81%D0%B8%D1%81%D1%82%D0%B5%D0%BC%D1%8B+%D0%BE%D1%82%D0%BE%D0%BF%D0%BB%D0%B5%D0%BD%D0%B8%D1%8F&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4695/4695503_skachat__gta__san_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693351_sony__vaio_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4695/4695030_zhivuye__oboi__na_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005687e.bin
2088f45504edcec856b5f4cb32eb521be2fc00782a15a6b7755aba3dfb85c801		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5687E 8424 bytes
font_01_sfnt_off000580ea.bin
f7936df99db3be70e2e885efb534609596a623f46051e3bdfc1ade0a77093f89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x580EA 16280 bytes

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