Malicious PDF — malware analysis report

Static analysis result for SHA-256 e20344762644cc97…

MALICIOUS

PDF

65.7 KB Authoring application: Nitro PDF
MD5: f6a72ce3ca27cf415ad065168964ca41 SHA-1: b9df6f4731618f60cde9826d05323b45d5ba32bf SHA-256: e20344762644cc973970353531e1670e2697b1f48973ab5bd5907e7763bfdc05
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 and the ML classifier output strongly indicate malicious intent. The document body, though partially obfuscated, contains references to 'Brunswick county sheriff's office reports' and includes numerous URLs, suggesting a lure to external malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://polishedpad.com/uploads/1/3/0/5/130550976/wojezawixevu-vijumisiriwonoz-tebaxosuvet-zameduz.pdf
    • http://misscarladance.org/uploads/1/3/0/2/130288551/88458afe21093.pdf
    • http://pirateinwonderland.com/uploads/1/3/0/4/130483498/norovojokosuvo.pdf
    • http://agentlemansartwork.com/uploads/1/3/0/6/130621980/987538.pdf
    • http://sabyhage.se/uploads/1/3/0/6/130639199/6284892.pdf
    • http://basicswitch.com/uploads/1/3/0/5/130588874/7773573.pdf
    • http://new-victory.site/uploads/1/3/0/6/130620846/befd3f8e215001.pdf
    • http://myfloridamediation.org/uploads/1/3/0/3/130379333/tokujegurosa_vafaratuk.pdf
    • http://neokundalini.org/uploads/1/3/0/5/130588605/130588605.html#brunswick+county+sheriff%27+s+office+reports

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010b3.bin
ce56eaf8ee19bc7d4785fd39d4fb29e3720b3e0ede8b866b4a42a8c7028b26ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B3 8248 bytes

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