Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8eaae57e0c767d3…

MALICIOUS

PDF

187.0 KB Created: 2015-07-24 00:16:05 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: efcc61bee7d3186939d5a7e4b1544a87 SHA-1: b9306f6689e18894c2a1c19f85a3b41e57a4ab69 SHA-256: c8eaae57e0c767d3043894d3d68dc5f54094483a0a77d6ff7b98d949a5a3747c
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 finding for a malicious redirector link and a high ML score. ClamAV also detected it as Pdf.Dropper.Agent-7494808-0. The embedded URL points to botcraftman.ru, which is identified as a malicious redirector. This suggests the document's primary purpose is to lure the user to a harmful external resource.

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-7494808-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7494808-0
  • 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%9E%D1%82%D0%B2%D0%B5%D1%82%D1%8B+%D0%BD%D0%B0+%D0%BA%D0%BE%D0%BD%D1%82%D1%80%D0%BE%D0%BB%D1%8C%D0%BD%D1%8B%D0%B5+%D1%80%D0%B0%D0%B1%D0%BE%D1%82%D1%8B+%D0%BF%D0%BE+%D1%84%D0%B8%D0%B7%D0%B8%D0%BA%D0%B5+8+%D0%BA%D0%BB%D0%B0%D1%81%D1%81+%D0%BF%D0%B5%D1%80%D1%8B%D1%88%D0%BA%D0%B8%D0%BD&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184947_skachat_naruto_ultimate_ninja_storm_2_na_pc.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183180_lebedi_shema_vuyshivki_krestom.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184358_zuppacraft_125_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002488c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2488C 3556 bytes
font_01_sfnt_off0002560f.bin
6123980f893e0a72dbd676982cd7969ef0731ed74b2a87e66a73cdca2412d087		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2560F 14308 bytes
font_02_sfnt_off00028294.bin
38fd32234bcede66ee93218f461fe57dddc4cf9f4dbdbf6048e54262fbf53ca2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28294 14520 bytes
font_03_sfnt_off0002ad61.bin
c7eb12c5a19125fbc58fadab8a3f49b3799f0e013427c12ff1569d74ec837626		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AD61 7224 bytes
font_04_sfnt_off0002c261.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C261 6084 bytes
font_05_sfnt_off0002d1f6.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D1F6 3752 bytes

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