Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6db7b2ea9705d48…

MALICIOUS

PDF

383.5 KB Created: 2015-08-21 09:17:27 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: a52ee2d983fe88624ac0fea52e204bc4 SHA-1: fd5fdcd0b3538d2d0316901fb03fc6c9553bb4f5 SHA-256: c6db7b2ea9705d481c113b6415bf3472355242b8bfe1f0ec23348f73c78069df
90 Risk Score

Malware Insights

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

The PDF file 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 embedded URL is sufficient evidence for a malicious redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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%BC%D0%B5%D0%BD%D1%8E+%D0%B3%D1%80%D1%83%D0%BF%D0%BF%D1%8B+%D0%B2%D0%BA%D0%BE%D0%BD%D1%82%D0%B0%D0%BA%D1%82%D0%B5+%D1%88%D0%B0%D0%B1%D0%BB%D0%BE%D0%BD%D1%8B&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654684_kogda_budut_izvestnuy_rezultatuy_egye_po_himii_2015.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654710_videopaseka_3_skachat_torrent.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005b809.bin
87a785a89a4d7363b55b0e79d15577bff69f22d613ad928ec2069eab20b50d73		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B809 8624 bytes
font_01_sfnt_off0005d11d.bin
8c7ee2cffa849c628b82696ea04dbf2a0b865bfdd6d744c1939bb3f9a26994c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D11D 14332 bytes

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