Malicious PDF — malware analysis report

Static analysis result for SHA-256 b445f78f0dd07007…

MALICIOUS

PDF

186.5 KB Created: 2015-07-24 11:50:29 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c05c90466cccc7a0823dad1c52727802 SHA-1: 0278cda80714baba3bec3ae0900aa9652aeadca3 SHA-256: b445f78f0dd0700793aaded6cb9eb3937491dba1d92881d4f39adef613ac5ad6
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical alert for a malicious redirector link and a high ML score. ClamAV also detected it as Pdf.Dropper.Agent-7493352-0. The embedded URL points to botcraftman.ru, which is identified as malicious redirector infrastructure. This suggests the document is designed to lure users to a harmful site, likely for further exploitation or credential harvesting.

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-7493352-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7493352-0
  • 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=%D1%8D%D0%BB%D1%8C%D1%87%D0%B8%D0%BD+%D1%81%D0%B0%D1%84%D0%B0%D1%80%D0%BB%D0%B8+%D0%BC%D0%BD%D0%B5+%D1%82%D0%B5%D0%B1%D1%8F+%D0%BE%D0%B1%D0%B5%D1%89%D0%B0%D0%BB%D0%B8+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BD%D0%B0+ipad&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190705_grand_theft_auto_5_skachat_torrent_na_kompyuter.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185203_onlayn_bot_dlya_sluysh_cho.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185468_vasha_versiya_windows_7_ne_yavlyaetsya_podlinnoy_chto_delat.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024321.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24321 3556 bytes
font_01_sfnt_off000250a4.bin
5d1c8952f42c8519827a05d8ea60cd6fce49d1dcc76b5764ea1dc09010777b9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x250A4 15040 bytes
font_02_sfnt_off00027f3a.bin
e6e6bc2b4b1469b5a1071ca0e88f139db73e7e5fd3c0d765eaa1ae073f6c88d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F3A 14692 bytes
font_03_sfnt_off0002aa9c.bin
046be8ef0e2f47e9250013207f5275b393d3f7c46698c446e574c0e0fdfdb86d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA9C 7372 bytes
font_04_sfnt_off0002c018.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C018 6084 bytes
font_05_sfnt_off0002cfad.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CFAD 3752 bytes

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