Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c3582dd82cae03d…

MALICIOUS

PDF

186.1 KB Created: 2015-07-25 09:52:40 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c12ec3f5d71b666b1164244f1642d632 SHA-1: f9d1992ad9a254c457bbac6f71a6cd6ac2ee2bfe SHA-256: 4c3582dd82cae03d58baa5fec29b7235f6a1b42b5d8ad1286bf27c9e4c2e75ef
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a direct link to a known malicious redirector infrastructure. This indicates the document is designed to lure users to a potentially harmful website. No scripts were extracted, and the document body was truncated, limiting further analysis of the exact lure.

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%B2%D0%B5%D1%81%D0%BD%D0%B0+%D0%B2+%D0%BF%D1%80%D0%BE%D1%81%D1%82%D0%BE%D0%BA%D0%B2%D0%B0%D1%88%D0%B8%D0%BD%D0%BE+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%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://img1.liveinternet.ru/images/attach/c/5//4193/4193466_speed_painting_skachat_programmu.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184858_sputnikovoe_televidenie_koduy_kanalov.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4201/4201251_lovi_vkontakte_skachat_muzuyku_i_video_so_stranic_vkontakte.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000245ae.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x245AE 3556 bytes
font_01_sfnt_off00025331.bin
49b1303f3ee5ca85721dfdfaed57b324b3182f89d56096033cea0ca5d050643f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25331 14976 bytes
font_02_sfnt_off0002819f.bin
ca985069d8a0b5f9556e32ed1e3352c049aa74e919f9b17af1bbb5ce58dfe42b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2819F 14740 bytes
font_03_sfnt_off0002ac88.bin
f1d94332ad4fe8d3d0c48854c98aff5e70a775a8bca09c1d59a9d1a2f1c1738c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AC88 6468 bytes
font_04_sfnt_off0002becb.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BECB 6084 bytes
font_05_sfnt_off0002ce60.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE60 3752 bytes

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