Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0ad631db0637f8f…

MALICIOUS

PDF

91.5 KB Authoring application: Inkscape
MD5: cffb622c6430e97b09c2114fe3499137 SHA-1: 0a2f49c116b4effdaf780cdaa650b964e1fa0151 SHA-256: e0ad631db0637f8fe8ac330b76b7e208768d2fd9de3b3c387f17c113f06f65bf
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to other PDF files, a technique commonly used for SEO poisoning and distributing malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as phishing. The embedded URLs likely lead to further malicious payloads or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9945

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://northwestpetscanning.com/uploads/1/3/0/6/130621075/3e8a93e.pdf
    • http://mrsboucher.com/uploads/1/3/0/6/130604363/nikatoziguminula.pdf
    • http://cofse.net/uploads/1/3/0/6/130639779/6924213.pdf
    • http://sweetestdreams.org/uploads/1/3/0/6/130604048/130604048.html#contractor+safety+management+guidelines

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010c7.bin
87e478403da35c2af384c7f72f40913c95a743dd3601c63f59b6113620fa6e81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C7 8776 bytes

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