Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cb5c4b677d8ce99…

MALICIOUS

PDF

186.4 KB Created: 2015-07-23 21:17:30 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a788e86913a63a0bb17c2f765679879e SHA-1: 92a6049ca07e1a52c666ad205022eedbcb33dbdc SHA-256: 8cb5c4b677d8ce99627c5e4a15e3d315c46fb53fab238f24ce38f16fab363de3
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, http://botcraftman.ru/..., is the primary indicator of compromise. No scripts were extracted, and the document body was truncated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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%BB%D0%BE%D0%B3%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B5+%D0%B7%D0%B0%D0%B4%D0%B0%D1%87%D0%B8+%D0%B4%D0%BB%D1%8F+3+%D0%BA%D0%BB%D0%B0%D1%81%D1%81%D0%B0+%D1%81+%D0%BE%D1%82%D0%B2%D0%B5%D1%82%D0%B0%D0%BC%D0%B8+%D0%BF%D0%BE+%D0%BC%D0%B0%D1%82%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D0%BA%D0%B5&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184765_skachat_sims_3_sverhestestvennoe_cherez_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184865_skazki_yelfiki_skachat_besplatno_txt.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184788_moduy_dlya_evro_trek_simulyator_2_versiya_1825.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000245d0.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x245D0 3556 bytes
font_01_sfnt_off00025353.bin
b47062e70cd281c510f7940249ca55d4f6c14dd54676670249574877758f9a61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25353 14664 bytes
font_02_sfnt_off00028159.bin
75446d7ea731569bd1d9d7ddf87d858d759097b0ac83149ee67182dbaef49f3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28159 14468 bytes
font_03_sfnt_off0002ac06.bin
d6d38c57bf1fe9431f2ce2be9367f576dcc896697beaf8e72bb35de9f4f3ad64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC06 6804 bytes
font_04_sfnt_off0002bfa3.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BFA3 6084 bytes
font_05_sfnt_off0002cf38.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF38 3752 bytes

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