Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef34fd3323247dbe…

MALICIOUS

PDF

188.8 KB Created: 2015-08-08 09:26:15 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: 1b4f05fe1a545ca49d04877452145afc SHA-1: 631455d47f8f1518dd7443a149da65b75ad36695 SHA-256: ef34fd3323247dbec376cbf75a39cfaf18a9da73929d87189d12759a78376d68
90 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector infrastructure. The ML classifier also flagged this PDF with high confidence. The primary malicious indicator is the embedded URL, which likely serves as a lure to a phishing or malware distribution site. No scripts were extracted, limiting the analysis of specific payload delivery mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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=%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+%D0%B4%D0%BE%D0%B3%D0%BE%D0%B2%D0%BE%D1%80+%D0%BD%D0%B0+%D0%BE%D0%BA%D0%B0%D0%B7%D0%B0%D0%BD%D0%B8%D0%B5+%D1%82%D1%80%D0%B0%D0%BD%D1%81%D0%BF%D0%BE%D1%80%D1%82%D0%BD%D1%8B%D1%85+%D1%83%D1%81%D0%BB%D1%83%D0%B3&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383711_programma_dlya_tachpada.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383704_skachat_vindovs_81_64_bit_2014_besplatno_na_russkom_torrent.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4383/4383719_marinina_vse_knigi_v_hronologicheskom_poryadke.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024cad.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24CAD 3556 bytes
font_01_sfnt_off00025a30.bin
1b24fd5a634c77ba3e7f556c907261c9fadbf3c75444f0a384c32c2c05fca79e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25A30 15224 bytes
font_02_sfnt_off000289db.bin
a6626c0bd3595dc776735a93968cf26fa9368d0e017313712711ccf7ec06347e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x289DB 14532 bytes
font_03_sfnt_off0002b4cb.bin
67a2acd5246f88d219557c4e0df9b523bc0e57791eb3098939afffd343cb5ba4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B4CB 7120 bytes
font_04_sfnt_off0002c989.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C989 6084 bytes
font_05_sfnt_off0002d91e.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D91E 3752 bytes

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