Malicious PDF — malware analysis report

Static analysis result for SHA-256 88ae3e0fb0f88710…

MALICIOUS

PDF

185.5 KB Created: 2015-07-24 09:13:47 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 019c42fdef43616713592f6703a4482e SHA-1: 1a3686dfb59cab0e55ba6d9fc38740f265641197 SHA-256: 88ae3e0fb0f88710dff053edf8b440be6b193d23999a82cdeefa3c82fbd213e6
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to botcraftman.ru. This indicates the document's primary purpose is to lure the user to a malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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-7525845-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7525845-0
  • 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%BF%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D0%B0+%D0%B4%D0%BB%D1%8F+%D1%80%D0%B0%D1%81%D0%BA%D0%BB%D0%B0%D0%B4%D0%BA%D0%B8+%D0%BB%D0%B0%D0%BC%D0%B8%D0%BD%D0%B0%D1%82%D0%B0&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184815_1s_predpriyatie_82_konfiguraciya_torgovlya_i_sklad_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185323_skyrim_angliyskaya_ozvuchka_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184528_skachat_transformeruy_praym_4_sezon_cherez_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024466.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24466 3556 bytes
font_01_sfnt_off000251e9.bin
0c66cbbe27244de1df69f99775c518f5d9a8110bfd6c802b7ce032bdd30569d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x251E9 14664 bytes
font_02_sfnt_off00027fcd.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27FCD 14468 bytes
font_03_sfnt_off0002aa80.bin
f94b6de119173df50b9f235568d3157df14405985cc0946cb2c9e2783bf4e3ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA80 6312 bytes
font_04_sfnt_off0002bc56.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC56 6084 bytes
font_05_sfnt_off0002cbeb.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CBEB 3752 bytes

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