Malicious PDF — malware analysis report

Static analysis result for SHA-256 b462179f8036ed93…

MALICIOUS

PDF

188.3 KB Created: 2015-07-24 15:06:32 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ed9781398f2d8148cbf34a31b06bbe8f SHA-1: 6ffd7c1ceeea16928839fea9bf4e0d19587b8838 SHA-256: b462179f8036ed932c475f1a77c5b95aa44dd4740012baf39726bbe277b3202a
90 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, http://botcraftman.ru/, which is highly indicative of a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence for the attack pattern.

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%88%D0%B0%D0%B1%D0%BB%D0%BE%D0%BD%D1%8B+%D0%B4%D0%BB%D1%8F+%D0%BF%D1%80%D0%B5%D0%B7%D0%B5%D0%BD%D1%82%D0%B0%D1%86%D0%B8%D0%B9+powerpoint+2007&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192651_drayver_sony_vaio_pcg71211v.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184781_baza_dannuyh_mts_2013_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4192/4192334_kod_aktivacii_dlya_3d_instruktor_2_2_7_domashnyaya_versiya.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002486c.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2486C 3556 bytes
font_01_sfnt_off000255ef.bin
aeff6063d341ec9160a3de7b84b1af7a6f5f1d9d5cf3c5d84294f52222c985cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x255EF 14808 bytes
font_02_sfnt_off000283eb.bin
3a39b2f336093b548c566df7935ddc150a4d6a54ed3defad4829478216066783		 pdf-font-stream PDF embedded font (sfnt) at offset 0x283EB 14752 bytes
font_03_sfnt_off0002af8b.bin
b8c11b266f8c204ad6e9c6d2e227efe6d53c9fab6d307016eadc4c89db0f3df9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AF8B 8076 bytes
font_04_sfnt_off0002c76f.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C76F 6084 bytes
font_05_sfnt_off0002d704.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D704 3752 bytes

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