Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbb94993e3bced0e…

MALICIOUS

PDF

184.2 KB Created: 2015-07-23 20:48:53 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: d4a0928bdfb730a5317909c1ddaea7bd SHA-1: 9283b08c20753ae0489a1ed0c0f026b95f1e572f SHA-256: cbb94993e3bced0e84321de300bfbbf4adcedffa232895e11ecb79a4bb2fff3b
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The primary malicious URL identified is http://botcraftman.ru/. While no scripts were extracted, the presence of this malicious link strongly suggests the document is designed to lure users to a harmful website, likely for phishing or malware delivery. The ML classifier also provided a high confidence score for maliciousness.

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=%D0%A7%D0%B8%D1%82%D1%8B+%D0%BD%D0%B0+%D0%BC%D0%B0%D0%B9%D0%BD%D0%BA%D1%80%D0%B0%D1%84%D1%82+1710&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184466_skachat_besplatno_vindovs_7_professionalnaya_64_bit.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184407_sims_2_pitomcuy_skachat_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183092_lebedi_shema_vuyshivki.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023ead.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23EAD 3556 bytes
font_01_sfnt_off00024c30.bin
63fd2585178f8b48351b4db3244d656091000fbaa121549c7ca6af089f635c6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24C30 14552 bytes
font_02_sfnt_off000279aa.bin
6e47eeda9830f544a2998830c3cd623d9fe89ff86dea7885e320ebbb7f37c3fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x279AA 14628 bytes
font_03_sfnt_off0002a4ef.bin
75ba4ddfa18e439ddc400190623f43d92165c30c0b624c97fc3a63ee36637160		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A4EF 6412 bytes
font_04_sfnt_off0002b714.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B714 6084 bytes
font_05_sfnt_off0002c6a9.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C6A9 3752 bytes

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