Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d6566ac5158637e…

MALICIOUS

PDF

346.6 KB Created: 2015-08-28 18:33:53 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 21952b7ce7cc50543d0414b9f8ac3768 SHA-1: 6c1e06427ea506f8ed19dfe5ad6c38b63713967f SHA-256: 7d6566ac5158637ed442a718e2ff4cf1c3999114d0c3db96619307682d51b9f5
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link that redirects to a malicious URL, likely intended to trick the user into downloading malware. The document body, though heavily obfuscated, contains text related to downloading GTA 4, reinforcing the lure. The ML classifier also flagged this PDF with high confidence.

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+gta+4+%D0%BE%D1%80%D0%B8%D0%B3%D0%B8%D0%BD%D0%B0%D0%BB+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%B0%D1%8F+%D0%B2%D0%B5%D1%80%D1%81%D0%B8%D1%8F&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809152_programmuy__dlya__nokiya_.pdf
    • http://img0.liveinternet.ru/images/attach/c/7//4810/4810034_blank__akta__priemki_.pdf
    • http://img1.liveinternet.ru/images/attach/c/7//4809/4809156_tk__rf_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000524f9.bin
24f3e9cadb25a4fc2cf4ee7067ef730ed89b0f10d0a5b8cb0c15daf523ad66eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x524F9 8544 bytes
font_01_sfnt_off00053d64.bin
5a9908e9453aaf3069481033b264d6fbfc4801057f7da2bb33765d295fc0d5c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53D64 14748 bytes

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