Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae0c6c8656039753…

MALICIOUS

PDF

186.2 KB Created: 2015-08-08 10:53:10 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: b1d14037f0d14f89a6ee0049a12554a7 SHA-1: 141faccdd235e1fda2ec6f2fb8deafa5f14e778e SHA-256: ae0c6c8656039753a56bad131b2cd93b3d302f0a52a52dab025ffa666b433865
90 Risk Score

Malware Insights

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

The PDF file was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL points to http://botcraftman.ru/, which is identified as a malicious redirector. This suggests the document's primary purpose is to redirect users to a harmful destination.

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%B6%D0%B8%D1%82%D0%BA%D0%BE%D0%B2+%D1%87%D1%82%D0%BE+%D1%8F+%D0%B2%D0%B8%D0%B4%D0%B5%D0%BB+%D0%BA%D1%80%D0%B0%D1%82%D0%BA%D0%BE%D0%B5+%D1%81%D0%BE%D0%B4%D0%B5%D1%80%D0%B6%D0%B0%D0%BD%D0%B8%D0%B5&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384045_skachat_mathcad_dlya_windows_7_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384696_pravila_angliyskogo_yazuyka_v_tablicah.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385692_sgm_22.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000243f4.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x243F4 3556 bytes
font_01_sfnt_off00025177.bin
61c1bc5f09df05694375c6093a8c27481de3f1e19395f4fc91725a4544f1b6dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25177 15068 bytes
font_02_sfnt_off00028000.bin
1f7bd1c90ad4d5492b13fd35b408217d408e9c34b5f5ae4614b76b483601dd6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28000 14704 bytes
font_03_sfnt_off0002ab65.bin
eeba87edce016b68d1085a2de02c59f549be272bcf940a131ede5df2751098bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AB65 6868 bytes
font_04_sfnt_off0002bf28.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF28 6084 bytes
font_05_sfnt_off0002cebd.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CEBD 3752 bytes

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