Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb7549284cada657…

MALICIOUS

PDF

186.0 KB Created: 2015-07-25 00:16:52 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ed6e81f2af4ac40ea06981b6bb55c391 SHA-1: e673e9108921afd24edb0302ce175ee965dc506d SHA-256: cb7549284cada657162e0d0b0a908c24bab151dffeb4604f08d235c8f1995278
92 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. An ML classifier also strongly indicated maliciousness. The embedded URL points to 'botcraftman.ru', which is associated with malicious activity. The document body content is not human-readable and appears to be artifactual data from the wkhtmltopdf tool.

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%D1%87%D0%B0%D1%82%D1%8C+%D0%B1%D0%B5%D1%81%D0%BF%D0%BB%D0%B0%D1%82%D0%BD%D0%BE+%D1%82%D0%BE%D0%BC+%D0%B8+%D0%B4%D0%B6%D0%B5%D1%80%D1%80%D0%B8+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4188/4188041_skachat_skachat_microsoft_power_point.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4191/4191743_moduy_dlya_maynkraft_175_na_oruzhie.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185611_resident_evil_psp_skachat_torrent.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000243ea.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x243EA 3556 bytes
font_01_sfnt_off0002516d.bin
3771508be531a4667e9ae9d666810f849ab2c001055d95b52ebfdd4d54196766		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2516D 14548 bytes
font_02_sfnt_off00027f23.bin
c457fcfaab6f548331a7572fefd0d96ae260c7787e9dff2b51ae1aa36573dbb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F23 14468 bytes
font_03_sfnt_off0002a9d2.bin
16e7df97dc660b2b0b280f2a83c8786e64196763c6f9c57e3ae69e0fca5905d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A9D2 6988 bytes
font_04_sfnt_off0002be0e.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE0E 6084 bytes
font_05_sfnt_off0002cda3.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CDA3 3752 bytes

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