Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc207c2d251cb268…

MALICIOUS

PDF

33.7 KB Authoring application: PDFBox
MD5: b86b459b9135e392724a35dacdfccec5 SHA-1: eaf04c2b761eec833f8ae09ce9caed7bceb101fc SHA-256: cc207c2d251cb268339e29b87fb6c0503cefbcf1e165e8efae6c20187e074ca1
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious websites. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as 'Pdf.Phishing.TtraffRobotInstall'. While the document body contains some text related to cover letters, the primary malicious activity appears to be the mass linking. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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 https://gonemelike.weebly.com/uploads/1/3/0/5/130546196/7153659.pdf
    • https://lumoxemexoduf.weebly.com/uploads/1/3/0/4/130489386/4462859.pdf
    • https://vuxosebaba.weebly.com/uploads/1/3/0/3/130313289/381f81ec6bd1a.pdf
    • https://rapisavuw.weebly.com/uploads/1/3/0/2/130288334/rovezikiwufi-xusopesivanovuj.pdf
    • https://zotixeziwuwazu.weebly.com/uploads/1/3/0/2/130289735/7498189.pdf
    • https://zoloxamaxari.weebly.com/uploads/1/3/0/5/130551006/jubisividiz-genur-sanorurixuxev-bapugigaxedoru.pdf
    • https://xujuwunekawe.weebly.com/uploads/1/3/0/2/130272421/cf22ab1d2bf15a.pdf
    • https://vajaxosojubogo.weebly.com/uploads/1/3/0/5/130543351/99f772eaa0b7ff0.pdf
    • https://malexamos.weebly.com/uploads/1/3/0/2/130272890/podemipa.pdf
    • https://rafilaluxonijew.weebly.com/uploads/1/3/0/4/130476150/130476150.html#cover+letter+examples+no+experience+student

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011e3.bin
bd0e714db918e56ec0961af2081a0e55b3a4642b100ec4ce9ed0b799c8a93867		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E3 7396 bytes

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