Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d037862e62022d…

MALICIOUS

PDF

187.3 KB Created: 2015-08-05 18:04:28 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e59329c83286cd7323990b74e4990360 SHA-1: 1d7033a81c5b5f4cb372c94b95c878e5f8026284 SHA-256: c5d037862e62022dd194dd96b5ec227fa27de6c5a09116000a7c88dfb6b92f7c
152 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 is designed to lure users to a potentially harmful website. ClamAV also detected it as Pdf.Dropper.Agent, suggesting it's a dropper for further malicious activity. The ML classifier strongly supports the malicious nature of the file.

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-7525295-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7525295-0
  • 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%B8%D0%B3%D1%80%D0%B0+%D0%B1%D0%B8%D0%BB%D1%8C%D1%8F%D1%80%D0%B4+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D0%B1%D0%B5%D0%B7+%D1%80%D0%B5%D0%B3%D0%B8%D1%81%D1%82%D1%80%D0%B0%D1%86%D0%B8%D0%B8&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305488_kak_pravilno_prokachat_yekipazh_v_world_of_tanks.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4306/4306000_skachat_mod_gps_dlya_farming_simulator_2013.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4305/4305233_skachat_treyner_dlya_castle_crashers.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024835.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24835 3556 bytes
font_01_sfnt_off000255b8.bin
0bdff3486aa388516ca859208728dd5e6a3626f6cab574ff982b18f6e30eb005		 pdf-font-stream PDF embedded font (sfnt) at offset 0x255B8 15208 bytes
font_02_sfnt_off000284d7.bin
2f174bce2bf89b86ed20b23e335462fb6c665daf7d579c7771c32fa68bc7e60f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x284D7 14468 bytes
font_03_sfnt_off0002af89.bin
f9b6450e775076b07ef2749e5101dded6bd765c21e36550484617a02c06fa6a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AF89 6828 bytes
font_04_sfnt_off0002c335.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C335 6084 bytes
font_05_sfnt_off0002d2ca.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D2CA 3752 bytes

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