Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4196b3e6a96febe…

MALICIOUS

PDF

183.9 KB Created: 2015-07-23 23:58:29 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: b0ab2ae3859c36d15f86482b6cf6ed41 SHA-1: b8c56e04d89dc42d4c4d0c7e5ba54fa8353373e4 SHA-256: e4196b3e6a96febe34605ad6c43458d1fc9fc94b496db7abddefd036102762e3
90 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL, http://botcraftman.ru/..., is the primary indicator of compromise, likely serving as a lure to a phishing or malware download site. No scripts were extracted, and the document body was not parsable.

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%BA%D0%B0%D0%BA+%D1%83%D0%B7%D0%BD%D0%B0%D1%82%D1%8C+%D0%BA%D0%BE%D0%B4+%D0%BE%D0%BA%D0%B0%D1%82%D0%BE+%D0%BF%D0%BE+%D0%B8%D0%BD%D0%BD&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184326_hp_laserjet_p1102_drayver_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184719_obrazec_zapolneniya_zayavleniya_na_zagranpasport.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184465_testovuye_zadaniya_po_russkomu_yazuyku_4_klass.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023e0a.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23E0A 3556 bytes
font_01_sfnt_off00024b8d.bin
173a7eb02cb96d38fda0f0d0cac6df6bb198dd9b9e728c0d39b24ae72c52609b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24B8D 14872 bytes
font_02_sfnt_off000279ac.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x279AC 14468 bytes
font_03_sfnt_off0002a45f.bin
3002a86a9859ff8422e32c48734f8993f04e086e236f33cd066f14d44eecfc06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A45F 6216 bytes
font_04_sfnt_off0002b5cb.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B5CB 6084 bytes
font_05_sfnt_off0002c560.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C560 3752 bytes

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