Malicious PDF — malware analysis report

Static analysis result for SHA-256 b88f4d48c95d80bb…

MALICIOUS

PDF

185.9 KB Created: 2015-07-24 04:16:35 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: a531e7cbfdad945fb772d3c0a9a518bf SHA-1: 25a3951168ec5def1a39d7076be45d4d6a92fe48 SHA-256: b88f4d48c95d80bbcf58d46d73c5b20d7a6b4c7c24590144ef183c7d0d448a3f
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector URL, botcraftman.ru. This heuristic, combined with the ML classifier's high confidence, strongly suggests the document is designed to redirect users to a malicious site. The document body is mostly binary data and does not provide further context on the lure.

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%B7%D0%B0%D0%B4%D0%B0%D1%87%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+%D0%B4%D0%BB%D1%8F+3+%D0%BA%D0%BB%D0%B0%D1%81%D1%81%D0%B0+%D0%BF%D0%B5%D1%82%D0%B5%D1%80%D1%81%D0%BE%D0%BD&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185600_medal_of_honor_airborne_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184967_chit_na_yenergiyu_k_igre_sladkiy_flirt.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187349_sims_freeplay_vzlom_ios.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002427b.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2427B 3556 bytes
font_01_sfnt_off00024ffe.bin
e20f458ffd7444c8bb0478630e69c3761765859661c49796b27384cc9bd42126		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24FFE 15208 bytes
font_02_sfnt_off00027f0c.bin
6e3169fab24faeb136532bf02fae19b2a1392047e17b61982e4259cde821d636		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F0C 14720 bytes
font_03_sfnt_off0002aa75.bin
aff32c626865c22ab801b1a8d954ec9ee0606af85b13b823c3075cab87a0edd5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA75 6712 bytes
font_04_sfnt_off0002bdbf.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BDBF 6084 bytes
font_05_sfnt_off0002cd54.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD54 3752 bytes

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