Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8b90eef9577e922…

MALICIOUS

PDF

188.1 KB Created: 2015-07-23 19:53:35 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ce5365bf8c940f7b7bca869185ea2552 SHA-1: 305b8af525a340cc7abc3357ca584f51603e3ed5 SHA-256: f8b90eef9577e92265793a72b83840f3407a7e86a1047d23c14d841078135b35
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 assigned a high probability of maliciousness. The embedded URL is the primary indicator of compromise, suggesting a phishing or redirection attempt.

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%BE%D0%B1%D1%83%D1%87%D0%B0%D1%8E%D1%89%D0%B8%D0%B5+%D0%BC%D1%83%D0%BB%D1%8C%D1%82%D1%84%D0%B8%D0%BB%D1%8C%D0%BC%D1%8B+%D0%B4%D0%BB%D1%8F+%D0%B4%D0%B5%D1%82%D0%B5%D0%B9+3-4+%D0%BB%D0%B5%D1%82+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D1%81+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82%D0%B0&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184298_interaura_neyronastroi_skachat.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183203_kursovoy_proekt_torgovuyy_centr.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4183/4183195_lada_kalina_shema_yelektrooborudovaniya.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024b7c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24B7C 3556 bytes
font_01_sfnt_off000258ff.bin
77738d759238eeb6caea6a35ce005c76a3c107d4625060385b05406711131304		 pdf-font-stream PDF embedded font (sfnt) at offset 0x258FF 14080 bytes
font_02_sfnt_off00028589.bin
248561204ec75595821b4ee323e58531120560e25abdbb2f349b9bb3ba6478fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28589 14468 bytes
font_03_sfnt_off0002b037.bin
d6e5767dc512f82297776400a5232bdf442c7d9d3b49d933356ea5f40a75cefd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B037 7620 bytes
font_04_sfnt_off0002c6ab.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C6AB 6084 bytes
font_05_sfnt_off0002d640.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D640 3752 bytes

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