Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cb136525063e8ad…

MALICIOUS

PDF

364.2 KB Created: 2015-08-26 09:58:58 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 1623b67ff0844c0aa5a198f35705e41f SHA-1: c7d981d6161feacd4cae3d3d2e20f55c9ce8d381 SHA-256: 6cb136525063e8ad5e49b3116fb84cc1f743e08c5ed3423c30349b46cb402d18
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 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 strongly flagged this PDF as malicious. No scripts were extracted, but the presence of the malicious URL is sufficient evidence of a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%BF%D1%80%D0%BE%D0%B1%D0%BD%D1%83%D1%8E+%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%8E+%D0%BA%D0%B0%D1%81%D0%BF%D0%B5%D1%80%D1%81%D0%BA%D0%BE%D0%B3%D0%BE+%D0%BD%D0%B0+6+%D0%BC%D0%B5%D1%81%D1%8F%D1%86%D0%B5%D0%B2+2013&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751940_need__for__speed_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4752/4752083_dzhodzho__moyes__korabl_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4751/4751647_privetstvie__kvn_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000566fa.bin
f58f1a1b85d4ede42e04aba2d8fae6f9487f457be66325a5aad8227ff6921730		 pdf-font-stream PDF embedded font (sfnt) at offset 0x566FA 8944 bytes
font_01_sfnt_off0005818e.bin
b93dac2f2c84b2d66ae2c147ae8eba072a41b8f46ef900a398113ff49daace36		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5818E 15452 bytes

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