Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddd4dfa8e7957f4b…

MALICIOUS

PDF

184.9 KB Created: 2015-08-08 13:18:50 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: c3e04cec4833776550499bd2e8fc2555 SHA-1: e3a4a4d171d3276bd88f51962906648ee83ad55f SHA-256: ddd4dfa8e7957f4b18326c769e968119f60a76a321a1dff455069207412b6912
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. This indicates the document is likely a lure to direct users to a malicious website. No scripts were extracted, and the document body was truncated, limiting further analysis of the exact delivery mechanism.

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%B0%D0%BD%D0%BA%D0%B5%D1%82%D0%B0+%D0%B3%D0%BE%D1%81%D1%81%D0%BB%D1%83%D0%B6%D0%B0%D1%89%D0%B5%D0%B3%D0%BE+%D0%BE%D0%B1%D1%80%D0%B0%D0%B7%D0%B5%D1%86+%D0%B7%D0%B0%D0%BF%D0%BE%D0%BB%D0%BD%D0%B5%D0%BD%D0%B8%D1%8F&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4385/4385405_ktp_s_uud_4_klass_shkola_rossii.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4384/4384155_lego_marvel_superheroes_skachat_torrent_pc_ruskiy_yazuyk.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4391/4391367_obnovlenie_operacionnoy_sistemuy_android_do_versii_4_0.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000240dc.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x240DC 3556 bytes
font_01_sfnt_off00024e5f.bin
0730b5681b8887b40ff522c9cc17496d1fd34f51f46d483e37f52fa51f6b33b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24E5F 14448 bytes
font_02_sfnt_off00027b28.bin
b79d56b22a3d37edc4793e81e28af2d51416733c1decb699be69ae0b1e9dff38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27B28 14468 bytes
font_03_sfnt_off0002a5d7.bin
755e9de8577f09cf095d710a0143071a20b868b11857d115f8343aaf36a15525		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2A5D7 6960 bytes
font_04_sfnt_off0002b9e1.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B9E1 6084 bytes
font_05_sfnt_off0002c976.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C976 3752 bytes

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