Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2e93f628804986b…

MALICIOUS

PDF

77.8 KB Created: 2010-02-23 12:29:53 -08:00
MD5: 1ca19f22253768c1227147c8ba763c60 SHA-1: 99595e0d653d9744e01c39cfd4fb8ad2f133daa5 SHA-256: d2e93f628804986b121c8bffebe815276205dc53df0bb3617c9e0a57788a57c5
100 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: User Execution

The file was identified as malicious by ClamAV with the signature Pdf.Dropper.Agent-1551399. Static analysis also detected an embedded file and flagged the PDF with an ML classifier indicating malicious intent. The presence of an embedded file suggests the PDF is likely acting as a dropper for additional malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

Heuristics 4

  • ClamAV: Pdf.Dropper.Agent-1551399 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-1551399
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PSEOF. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/xap/1.0/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/pdf/1.3/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_001_off000003c6.js
f574e4d51594d1a8fd22e125b109b827c437aa898edc78babb62dbb93f8744f8		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3C6 1532 bytes

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