Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee25dde4c0fab214…

MALICIOUS

PDF

44.8 KB Authoring application: PDFBox
MD5: e064b26be8f1581cf86b6e98b947346f SHA-1: 158ec687a441abdee650e9596491775d2565f21c SHA-256: ee25dde4c0fab214860f69e1372e5a7dd3686e2ae3cd4f8b09bfeedd249a3235
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links pointing to external domains, a technique commonly used for link farms to distribute malicious content or conduct phishing. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly indicate malicious intent. The embedded URLs are the primary indicators of compromise, likely serving as the initial stage for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://ketam.onlineevents.tech/uploads/2020/01/28/dawezazokig.pdf
    • http://allaccessbuildingservices.com/uploads/1/3/0/5/130588622/2095100.pdf
    • http://nmr-stockholm.com/uploads/1/3/0/4/130483794/larelokamus.pdf
    • http://niagaramedia.us/uploads/1/3/0/3/130312974/zexidolazoku_koduji_gexoronef.pdf
    • http://bestyethomeimprovement.com/uploads/1/3/0/4/130488412/wuxur-topefugixagag.pdf
    • http://drpatty.net/uploads/1/3/0/2/130289063/130289063.html#consumidor+financiero+bancolombia

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000112d.bin
5e312a3d9124fd438890730b0d3d17f50baa74161e250ce41ad5ba36ec60ecbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x112D 9644 bytes

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