Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bea0460f826aa49…

MALICIOUS

PDF

360.6 KB Created: 2015-08-24 04:03:51 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: fc08182e9602ee6ee7823040ec40d137 SHA-1: fdde79c98ab512173c1cda70bd20a1575d0f7bc1 SHA-256: 6bea0460f826aa49da367281627f5704ef82dc7d6d8b4c740bd0edf3e9782b7c
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL is sufficient evidence of a malicious intent, likely for phishing or malware distribution.

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%BC%D0%BE%D0%B4+%D1%80%D0%B8%D0%B2%D0%B5%D1%80%D1%85%D0%B5%D0%BB%D1%8C%D0%BC+%D0%B4%D0%BB%D1%8F+skyrim&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4693/4693670_skachat__gta__4_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4698/4698582_one__direction__midnight_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4697/4697358_kvitanciya__oschadbanka_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055841.bin
13ec6b505a994dcbb8bbc43c84fcc2bb94357c8ee7c7f00891587929b3ae715c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55841 9224 bytes
font_01_sfnt_off00057267.bin
3bf99b87c40aa13a8414e37ab617217e91e10f7d2ca85440d8e4399412ec5864		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57267 16308 bytes

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