Malicious PDF — malware analysis report

Static analysis result for SHA-256 796d5091c12f1cbb…

MALICIOUS

PDF

183.6 KB Created: 2015-07-25 03:03:48 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: f3267d74ee4845176c3aa9e2c79c59fc SHA-1: 542dca975f93f5063cfd625a0b926ef975ad4a27 SHA-256: 796d5091c12f1cbbf6b8fcccb4211126bfee53fd4eb4b081c8dbdcbdf9c7c942
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 ML classifier also strongly indicated maliciousness. The embedded URL points to 'botcraftman.ru', which is associated with malicious redirects. No scripts were extracted, but the primary attack vector appears to be the malicious link within the PDF.

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%B1%D0%BE%D1%80%D0%BD%D0%B8%D0%BA+%D1%80%D0%B0%D0%B4%D0%B8%D0%BE+%D0%B2%D0%B0%D0%BD%D1%8F+%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/5//4192/4192291_skachat_programmu_dlya_vzloma_igr_na_android_bez_root.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184850_skachat_launcher_maynkraft_172_s_modami_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192247_drayver_dlya_vneshnego_zhestkogo_diska_3q.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023de0.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23DE0 3556 bytes
font_01_sfnt_off00024b63.bin
eb1e2e7f90b27aa20a55bbc3d8e7754ec62360baaeb465d47d864410d20c9a6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24B63 14056 bytes
font_02_sfnt_off000277a4.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x277A4 14468 bytes
font_03_sfnt_off0002a257.bin
9a348980ff00dab8ba74eea17f34d49d48134882f5c275acff931ff46a71cf7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A257 6464 bytes
font_04_sfnt_off0002b4b0.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B4B0 6084 bytes
font_05_sfnt_off0002c445.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C445 3752 bytes

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