Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f2b26ec7804b853…

MALICIOUS

PDF

358.3 KB Created: 2015-08-22 08:53:02 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 7b0651f85137e9f619788c9f11db7562 SHA-1: cd8bf44df68419b7c927a1c457dd08e54fd42fd1 SHA-256: 0f2b26ec7804b853850b71541d85c373459251e6a8b4be8c622879b83b3d43c2
152 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 lead the user to a harmful site. ClamAV also identified the file as a known dropper, suggesting it's designed to deliver additional malicious content. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-9084262-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9084262-0
  • 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%90%D1%80%D1%85%D0%B8%D0%BA%D0%B0%D0%B4+15+%D1%81%D0%B0%D0%BC%D0%BE%D1%83%D1%87%D0%B8%D1%82%D0%B5%D0%BB%D1%8C&charset=utf-8
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674479_skachat_kartuy_dlya_navitel_7000_dlya_android.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674483_prava_root_dlya_freedom_skachat.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4674/4674470_kod_registracii_dlya_dead_space_1.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00055523.bin
cf78fa6ac36c87fac7faaefa972617da49e68574525edeac02385e3c1b644165		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55523 7928 bytes
font_01_sfnt_off00056c75.bin
c47dd41861fd22544a0f0493d1f942d62af7f4718db23407ade2bbaf4f7bd514		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56C75 14692 bytes

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