Malicious PDF — malware analysis report

Static analysis result for SHA-256 89da706bb28fbfc9…

MALICIOUS

PDF

184.4 KB Created: 2015-08-08 10:50:31 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e5414975c91e94f9542fb80d99e779e0 SHA-1: 6f0214b95a869b04d3ab5ddff5c190f335369d9a SHA-256: 89da706bb28fbfc980d40b2bf99819d461cc6c47858d60b008acb70c1a2be0ff
152 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 finding for a malicious redirector link. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to botcraftman.ru, which is identified as a known malicious redirector. No scripts were extracted, but the presence of a malicious link indicates an attempt to redirect the user to a malicious 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-7627358-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7627358-0
  • 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%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+dsploit+rus+%D0%BD%D0%B0+%D0%B0%D0%BD%D0%B4%D1%80%D0%BE%D0%B8%D0%B4&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384656_skachat_3d_sexvilla_2.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384857_blank_uzi_pochek_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384222_skachat_multfilm_diego_cherez_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002a3fc.bin
e437cc6260b54c805bfd39e4ca41e69499fe05b9806ec1adb49cb76f38ba9574		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2A3FC 6876 bytes
font_00_sfnt_off00023dce.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23DCE 3556 bytes
font_01_sfnt_off00024b51.bin
825e86e7cbf59f798cf4672e9e0c3b197b321338281a9d56374844f09067b078		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24B51 14740 bytes
font_02_sfnt_off000278ee.bin
d82716ab90c7a17aa9af69bb5dc1c2e2ad19187c45754c5c7c84f92b0f0a3327		 pdf-font-stream PDF embedded font (sfnt) at offset 0x278EE 14576 bytes
font_04_sfnt_off0002b7d9.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B7D9 6084 bytes
font_05_sfnt_off0002c76e.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C76E 3752 bytes

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