Malicious PDF — malware analysis report

Static analysis result for SHA-256 465bd8cc7f550f7e…

MALICIOUS

PDF

352.1 KB Created: 2015-08-21 09:22:06 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 99e470a151412257c5239a6382c63854 SHA-1: 17d55511142c15c929b82f95a4733ef5908c9f92 SHA-256: 465bd8cc7f550f7eaee69fe7489d8b7a357284b13eca086f50917f155a6a468b
90 Risk Score

Malware Insights

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

The PDF contains an embedded link to a known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated and does not provide clear textual lures, but the presence of the malicious URL is sufficient evidence of a malicious intent, likely to phish credentials or deliver a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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%BD%D0%B0%D0%B2%D0%B8%D1%82%D0%B5%D0%BB+%D0%B4%D0%BB%D1%8F+windows+ce+60+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654682_skachat_programmu_torrent_3x_speed.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654751_onlayn_bot_dlya_sluysh_cho.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4654/4654691_drayvera_dlya_pleera_qumo_boxon.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00052ea9.bin
429cc14526b6dd98f6df0223ce09dde169e81f1a759b7c3161ffd2fb85ed2d12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52EA9 9744 bytes
font_01_sfnt_off000549e3.bin
7e2388a485c3b7b748824e09141ccd1a72f4e3ac96842b53887ce6e330f3c397		 pdf-font-stream PDF embedded font (sfnt) at offset 0x549E3 18228 bytes

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