Malicious PDF — malware analysis report

Static analysis result for SHA-256 b74e5e5ceb5219e6…

MALICIOUS

PDF

354.6 KB Created: 2015-08-21 09:20:58 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: aeaefca4ede8728e5cc37fb3d9051e4c SHA-1: 272093394a017a5da378a5ec6c14cec7ca886c44 SHA-256: b74e5e5ceb5219e6c46625c9e579aba218f82ed784dfd9345af195af767a06f7
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, disguised with keywords related to downloading Microsoft Outlook 2010. This indicates a phishing attempt to trick users into visiting a malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, limiting the analysis of further stages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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=microsoft+outlook+2010+%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%B4%D0%BB%D1%8F+windows+7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654709_skachat_aktivator_dlya_windows_7_all.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654767_telefonnuyy_spravochnik_gomelya_2014.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654703_skachat_drayver_printera_canon_lbp_2900.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053f6a.bin
cf28c96f0686815ac3b4ca01ca3077a2d38ebfc25d1c8a6609d43e42d1161753		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53F6A 9992 bytes
font_01_sfnt_off00055bbc.bin
4632beacc5536c64aaa3fef95ddf32435cc3ed456803b974260cf9f6f03d3378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55BBC 15220 bytes

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