Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b9921aaec2d3a15…

MALICIOUS

PDF

186.3 KB Created: 2015-07-24 11:37:51 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 20e81d2951f33be1ee1209830e7f275c SHA-1: 1810861be5793a6cc70993ca892b554d2576bf38 SHA-256: 6b9921aaec2d3a157d1eb50ecb073eca9de1abca430dcd53a55364eba7ef2fa9
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was flagged by multiple heuristics, including a critical finding for a malicious redirector link. The ML classifier also assigned a high probability of maliciousness. The embedded URL, http://botcraftman.ru/..., is identified as a malicious redirector, suggesting the document's primary purpose is to lure users to a harmful site. No scripts were extracted, but the presence of a malicious link indicates a likely attempt to deliver a secondary payload or phish for information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-8787566-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8787566-0
  • 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%88%D0%BA%D0%BE%D0%BB%D0%B0+7+%D0%B3%D0%BD%D0%BE%D0%BC%D0%BE%D0%B2+%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&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4186/4186602_koldina_applikaciya_s_detmi_45_let_skachat_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4190/4190027_skachat_igru_gta_5.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184605_windows_vista_home_premium_sp2_32_bit_rus_skachat_torrent.pdf
    • http://www.microsoft.com/typography/fonts/
    • http://www.microsoft.com/typography/fonts/You

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024346.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24346 3556 bytes
font_01_sfnt_off000250c9.bin
60599eaf11fb1f47f44e7be913cadf4f4f5639254a3aa8705d6d274d945b53c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x250C9 15652 bytes
font_02_sfnt_off00028172.bin
24944dc1a515e00c2613e45ee090ccc868f8a9354e4ea7dde42d25859939ff0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28172 14568 bytes
font_03_sfnt_off0002ac80.bin
ea67ab600c3b9bc60c3b485ea12a5a0ada59dc9d0765e11d82e64d1f9e619381		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC80 6644 bytes
font_04_sfnt_off0002bf76.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF76 6084 bytes
font_05_sfnt_off0002cf0b.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF0B 3752 bytes

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