Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf65e32217cfeb58…

MALICIOUS

PDF

187.7 KB Created: 2015-07-27 18:02:03 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 0243dcb886b3b1f5f7f6c3754d07276f SHA-1: 9ee4837c9ed9e58d84c06ab41824ca2f9e8994d7 SHA-256: cf65e32217cfeb5847ca8f62bdfbc20e66c1564ec4d67e6062d825c423c49903
90 Risk Score

Malware Insights

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

The PDF contains a link to known malicious infrastructure, indicating a redirection attempt. The ML classifier also flagged this PDF with high confidence. The embedded URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 2

  • 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.
  • 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+windows+7+%D0%BC%D0%B0%D0%BA%D1%81%D0%B8%D0%BC%D0%B0%D0%BB%D1%8C%D0%BD%D0%B0%D1%8F+x64+rus+%D1%81+%D0%B4%D1%80%D0%B0%D0%B9%D0%B2%D0%B5%D1%80%D0%B0%D0%BC%D0%B8+2013+%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://img1.liveinternet.ru/images/attach/c/5//4191/4191633_skachat_windows_7_iso_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4197/4197415_vstrecha_odnoklassnikov_40_let_spustya_scenariy_stihi.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4227/4227253_skachat_arhikad_16_russkiy_besplatno.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002ac44.bin
c10838ebeee1568cb29b54a14ab90a502647c0844a2bdb653df1e14515d69c77		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2AC44 8196 bytes
font_00_sfnt_off0002461c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2461C 3556 bytes
font_01_sfnt_off0002539f.bin
4db23fff57cce86e9bc2e6cfe64832c1f6f0a7ec1a97599e9d6cc374ba5e2556		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2539F 14464 bytes
font_02_sfnt_off000280e9.bin
8d08ec589dff15cd5890fb83ed8c773c46634a2665e91133e1b57cff64a3f528		 pdf-font-stream PDF embedded font (sfnt) at offset 0x280E9 14648 bytes
font_04_sfnt_off0002c4d1.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C4D1 6084 bytes
font_05_sfnt_off0002d466.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D466 3752 bytes

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