Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4681cd2f907e858…

MALICIOUS

PDF

38.8 KB Authoring application: Nitro PDF
MD5: b8a50b61452823a731a9cff4da656c62 SHA-1: 6ea5a2b8e2556879ab56f52804fae49a941e5948 SHA-256: a4681cd2f907e8589f966d6cdadee64297ce053552ad2fdec785f945e10714d7
92 Risk Score

Malware Insights

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

The file is a PDF document that contains multiple embedded URLs, all of which are flagged as unknown reputation. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. The document body itself contains references to educational materials, potentially as a lure, and directly embeds the suspicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://myvegandish.com/uploads/1/3/0/6/130639074/5055804.pdf
    • http://vertontravelservices.com/uploads/1/3/0/6/130639321/sotixitovoxedaxo.pdf
    • http://tigerkrewe.com/uploads/1/3/0/2/130272290/rekuwev.pdf
    • http://nelsonkimeofficial.com/uploads/1/3/0/2/130271206/3ae7172d.pdf
    • http://colapservices.in/uploads/1/3/0/5/130550724/vugaful_wobenajaji_nazovepozijaboz.pdf
    • http://natashabentley.co.uk/uploads/1/3/0/5/130551456/130551456.html#holt+mcdougal+larson+algebra+2+pract

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010ae.bin
347badc1f622c76d846c9b43d9390fb903eec67868bfc32d53ce5a58ed6cb474		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10AE 8424 bytes

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