Malicious PDF — malware analysis report

Static analysis result for SHA-256 cde764d1f0a93776…

MALICIOUS

PDF

184.4 KB Created: 2015-08-05 13:34:32 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 2dbce7b0c1a074d0211b144a52abc55d SHA-1: bdd6107466782978671189cd21ce4b5ff9657ee6 SHA-256: cde764d1f0a93776d744d41078d4638428ba581ebe7172c2f02a33e3cc93af57
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 containing a link to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL, http://botcraftman.ru/?lip&keyword=%D1%81%D0%BA%D0%B0%D0%B9%D1%80%D0%B8%D0%BC+%D0%BA%D0%BE%D0%B4%D1%8B+%D0%BD%D0%B0+%D0%BC%D0%B5%D0%B1%D0%B5%D0%BB%D1%8C&charset=utf-8, is the primary indicator of compromise. No scripts were extracted, and the document body was not sufficiently readable to infer user-facing lures.

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%D0%B9%D1%80%D0%B8%D0%BC+%D0%BA%D0%BE%D0%B4%D1%8B+%D0%BD%D0%B0+%D0%BC%D0%B5%D0%B1%D0%B5%D0%BB%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304504_assasin_krid_yuniti_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304601_skachat_mod_vlastelin_kolec_na_maynkraft_164.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4304/4304507_programma_dostupnoe_zhile_moloduym_semyam.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023f07.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23F07 3556 bytes
font_01_sfnt_off00024c8a.bin
9e1acc167dec2f30d4dd9a3d3711eb4cc1add0e03b0005c0f347a7ac4e809876		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24C8A 14544 bytes
font_02_sfnt_off00027a09.bin
dde8cb3db78f49492d397de1013a074ab9c596bc0508faa33f94bd64189db0ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27A09 14468 bytes
font_03_sfnt_off0002a4bc.bin
a907db0eb50fba57c2d42ac0e1b991fe0ae204562c6eacd1f774f2e6e1aa56cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A4BC 6632 bytes
font_04_sfnt_off0002b79c.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B79C 6084 bytes
font_05_sfnt_off0002c731.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C731 3752 bytes

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