Malicious PDF — malware analysis report

Static analysis result for SHA-256 28fe92f4e611c9cf…

MALICIOUS

PDF

185.6 KB Created: 2015-07-24 00:15:53 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: b488f521d30de6a7ed89a84b82324d15 SHA-1: 8a6a2eadc02242a82c9997a4ec17a63cb258f93f SHA-256: 28fe92f4e611c9cf042b50acabf333c160418b18eb6ad4bfe7591ece534eb7c3
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 link to a known malicious redirector infrastructure. This suggests the document is designed to lure users to a malicious 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%BD%D0%B0%D0%B1%D0%BE%D0%BA%D0%BE%D0%B2+%D0%BB%D0%BE%D0%BB%D0%B8%D1%82%D0%B0+%D0%B0%D1%83%D0%B4%D0%B8%D0%BE%D0%BA%D0%BD%D0%B8%D0%B3%D0%B0+%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184819_pripyat_3d_yekskursiya_skachat_torrent.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184554_sims_3_polnaya_antologiya_19_v_1_skachat_torrent_besplatno.pdf
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184409_programma_vremya_segodnyashniy_vuypusk_21_00_smotret_onlayn.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002447b.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2447B 3556 bytes
font_01_sfnt_off000251fe.bin
9c686ddd6baa2ff65f40dc755209757919ae4e9c4d20bfb5c3d68cae8a03183e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x251FE 14612 bytes
font_02_sfnt_off00027f7d.bin
dbc3da39f0035cfe760ab64a497eec5c4b1ebe4f79fbba732b355541a3d7ec37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27F7D 14468 bytes
font_03_sfnt_off0002aa31.bin
c1abbfc764c1d3d71c8398ed64a188e83f6d58cfe50865e2b812638804ec3fad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AA31 6524 bytes
font_04_sfnt_off0002bcc7.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BCC7 6084 bytes
font_05_sfnt_off0002cc5c.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC5C 3752 bytes

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