Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd3370f92254deb2…

MALICIOUS

PDF

182.2 KB Created: 2015-08-08 15:15:05 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: e630c43c3b6adf377b9156f6d1e7c0d1 SHA-1: b44abea7b81d62575219a964f7f70ffa7fd14572 SHA-256: cd3370f92254deb299b881bf192e8a43c18df7becd8db9d0500e81ebfed34fc1
92 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The embedded URL http://botcraftman.ru/?lip&keyword=diablo+the+hell+rus&charset=utf-8 is associated with malicious activity. The ML classifier also strongly indicated maliciousness. No scripts were extracted, and the document body was unreadable binary data, so the attack pattern is inferred from the malicious URL.

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=diablo+the+hell+rus&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4393/4393062_besplatnaya_programma_dlya_agentstva_nedvizhimosti.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4391/4391658_zayavka_na_kommercheskoe_predlozhenie_obrazec.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4388/4388039_sdelat_manikyurnuyy_stol_svoimi_rukami_chertezh.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off00029d6b.bin
117111ef8e302b03de953f9322d8700fa5328f258c7f9749dcfa89c5d9af1717		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x29D6B 6248 bytes
font_00_sfnt_off00023620.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23620 3556 bytes
font_01_sfnt_off000243a3.bin
5ec30d65fe2e4b2b939fd706485b4f2ec272fbb97e71a218c4293925e7a0f998		 pdf-font-stream PDF embedded font (sfnt) at offset 0x243A3 14864 bytes
font_02_sfnt_off00027176.bin
04412aedd0e3bd234972cf4eaaaf8ff4b4a2afe68d4742139266dc70bf435ac3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27176 14944 bytes
font_04_sfnt_off0002af02.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AF02 6084 bytes
font_05_sfnt_off0002be97.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE97 3752 bytes

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