Malicious PDF — malware analysis report

Static analysis result for SHA-256 228b6087fb0dea89…

MALICIOUS

PDF

26.4 KB Authoring application: LibreOffice Draw
MD5: fee287c0fa393df2bd181bd1d761ad82 SHA-1: c352ed34ff88f3730dba94976e153bad1f0f8f66 SHA-256: 228b6087fb0dea8916c030f6862f1be23f30c0e3b3db371f76ac06227a2a93a7
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains a large number of embedded URLs pointing to external PDF documents. The heuristic 'PDF_SEO_LINK_FARM' indicates this is a link farm designed to distribute traffic. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious intent, likely phishing or malware distribution through these linked documents. No scripts were extracted from this sample.

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://v-techsnc.com/uploads/1/3/0/5/130551066/9283884.pdf
    • http://vizipof.conditionsnap.com/uploads/2020/01/28/9197423.pdf
    • http://wuxunen.takprosto.club/uploads/2020/01/27/4d6bbc9471a794.pdf
    • http://yakamoz.ru/uploads/2020/01/27/dbe08d5ac5c54f.pdf
    • http://gpisgroup.com/uploads/1/3/0/5/130552016/tozida.pdf
    • http://wibibu.jnbusiness.services/uploads/2020/01/28/buduzoxasogew.pdf
    • http://etherget.org/uploads/2020/01/29/9e4cd1.pdf
    • http://wrinkleddogs.com/uploads/1/3/0/5/130545882/birineza.pdf
    • http://sonshineflowersandgifts.com/uploads/1/3/0/5/130588849/130588849.html#homophones+worksheet+grade+2+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000105c.bin
2117afb77dca1ffd38ae18a0266840216eb63244f961fa09922d20712f010060		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105C 6292 bytes

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