Malicious PDF — malware analysis report

Static analysis result for SHA-256 c159ac8e5385ad97…

MALICIOUS

PDF

34.8 KB Authoring application: OpenOffice Draw First seen: 2021-11-02
MD5: 02df5cdbca003a013367f04080f5434f SHA-1: 10617c1745314216464645ab0a79cb2f0f00aacb SHA-256: c159ac8e5385ad971271529187d974c8e8eb0a209eeca182137740bba1d60204
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document identified as malicious by ClamAV and an ML classifier. It contains multiple embedded URLs, one of which is also listed as an external URI, suggesting it is designed to redirect users to download further malicious content. The document body, though heavily obfuscated, contains references to these URLs and appears to be a lure for downloading a PDF related to Autodesk Fusion 360.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 3

  • ClamAV: Pdf.Dropper.Agent-7846749-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7846749-0
  • 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://winfilm.ru/uploads/2020/01/28/xinefadokakavet.pdf PDF link annotation
    • http://takingcareyoga.com/uploads/1/3/0/6/130622038/f6c8ab0c78.pdfIn PDF document text
    • http://nellie-vanbruggen-edu.ca/uploads/1/3/0/6/130640010/1326398.pdfIn PDF document text
    • http://dlhp-solutions.com/uploads/1/3/0/6/130603861/130603861.html#autodesk+fusion+360+tutorial+deutsch+pdfIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000fd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD4 8316 bytes
SHA-256: ac2dcec12eaf4fc71c403bee71a3a1645a361b1780e4fe5878a29113d63d36d2

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