Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fbfed11cf3b6896…

MALICIOUS

PDF

364.8 KB Created: 2015-08-22 08:52:29 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: ce3bb23f6c87aee650f271e8649efc3f SHA-1: cf9816b884ef9ddacb88d8bb6ed1c647e26c562a SHA-256: 1fbfed11cf3b689606d53a45675df96f8a0a07bc7a4552785602857067b909ed
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is associated with malicious redirector activity. No scripts were extracted, and the document body was heavily obfuscated and truncated, preventing further analysis of its specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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=allj+%D1%8D%D0%BB%D0%B4%D0%B6%D0%B5%D0%B9+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B0%D0%BB%D1%8C%D0%B1%D0%BE%D0%BC+%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//4674/4674490_pezho_206_sedan_instrukciya_po_yekspluatacii_chitat_onlayn.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674487_bonus_kod_world_of_tanks_2015_na_noyabr.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674492_egye_po_russkomu_yazuyku_2015_4_klass_s_otvetami.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000567c7.bin
34da0375c9df4058f1aff456020c416c6e236de1a94bd6c2cd9093b961fbd614		 pdf-font-stream PDF embedded font (sfnt) at offset 0x567C7 9060 bytes
font_01_sfnt_off0005824d.bin
babf19977bae91d4545875d2296bfea302d45981518cc43cbc8a9dae5627935f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5824D 15936 bytes

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