Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9a4dedc5a24b0b9…

MALICIOUS

PDF

382.9 KB Created: 2015-08-19 13:58:15 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: cf01d4a0d499efcec0f2ac2396eb6fbf SHA-1: dc07911575a82a460185e5622351d0435714a24b SHA-256: b9a4dedc5a24b0b94f5054c293020a54733dc4b748e04d3952b7fc48fbaa5f9e
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. A critical heuristic identified a link to a known malicious redirector at http://botcraftman.ru/. This indicates the document's primary purpose is to redirect users to a potentially harmful site, likely for malware distribution or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-7621922-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7621922-0
  • 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%B5%D0%B2%D0%B3%D0%B5%D0%BD%D0%B8%D0%B9+%D1%81%D1%83%D1%85%D0%BE%D0%B2+%D1%8F+%D0%B2%D0%BE%D1%80+%D0%B2+%D0%B7%D0%B0%D0%BA%D0%BE%D0%BD%D0%B5+%D0%B2%D1%81%D0%B5+%D0%BA%D0%BD%D0%B8%D0%B3%D0%B8+%D0%BF%D0%BE+%D0%BF%D0%BE%D1%80%D1%8F%D0%B4%D0%BA%D1%83+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+fb2&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626611_mx_player_dlya_windows_7_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4626/4626459_pittakus_lor_mest_sedmoy_skachat_fb2.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4496/4496724_skachat_videopad_video_editor_241_rusifikator.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005afad.bin
7bd4b2543efc6df732c5d64ad1c5dbc0dedef4ac4415ff1efb2aa9b180691974		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AFAD 8712 bytes
font_01_sfnt_off0005c8d8.bin
77f31ccc87206c87faa6c7a150ac765e31de2698ff00cae4f77f3da2a5b027a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C8D8 17300 bytes

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