Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bbe239b694d6158…

MALICIOUS

PDF

186.2 KB Created: 2015-08-05 13:26:17 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: df83d004f0efe0e17574f59104e1d45a SHA-1: 7adb2ed752565fb1065b072d141e11c1058d4b17 SHA-256: 4bbe239b694d6158632e3b13143b68f4df3e7f7dcf916dda9ca082c1d4e4337e
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 alert for a malicious redirector link and a machine learning model. The embedded URL points to 'http://botcraftman.ru/', which is identified as a known malicious redirector. This suggests the PDF is designed to lure users to a malicious site, likely for further malware delivery or exploitation.

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-7559758-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7559758-0
  • 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%BD%D0%B5%D0%B2%D0%B5%D1%80%D0%BE%D1%8F%D1%82%D0%BD%D1%8B%D0%B9+%D1%85%D0%B0%D0%BB%D0%BA+%D0%B8%D0%B3%D1%80%D0%B0+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304475_skachat_programmu_dlya_semki_video_s_vebkameruy.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304499_skachat_gta_3_na_android_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304453_provoduy_na_pensiyu_muzhchinuy_scenariy.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024455.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24455 3556 bytes
font_01_sfnt_off000251d8.bin
5d56d823b6b0663770bb3cb1239f04904ac8aa0dbf8c64ed493493b48bf260d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x251D8 15124 bytes
font_02_sfnt_off00028075.bin
c947384ca9da6b338a802e2d79393af65bbc7ec579a56be2392c779918975b81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28075 14532 bytes
font_03_sfnt_off0002ab68.bin
01ba4aa333aa4a8ccfb058c82f8c13506db73df8c54ab491b059263d1904d7f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AB68 6808 bytes
font_04_sfnt_off0002beed.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BEED 6084 bytes
font_05_sfnt_off0002ce82.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE82 3752 bytes

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