Malicious PDF — malware analysis report

Static analysis result for SHA-256 92119174438a74e0…

MALICIOUS

PDF

7.1 KB
MD5: da382372bb45d996e2d65f1b09011407 SHA-1: ea3ab0261b81d1865cea2f22e2c167ae2e914944 SHA-256: 92119174438a74e0fc7eb5026f2eb4ef985855876014bd5cd3a406daeb9e627b
88 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ML classifier strongly flagged this PDF as malicious. The presence of unescape() calls suggests obfuscation to hide malicious JavaScript code. While no specific URLs or executable payloads were directly extracted, the embedded script is designed to execute malicious code, likely for exploitation or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9825

Heuristics 5

  • unescape() call high PDF_UNESCAPE
    unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules. (matched inside decoded stream)
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules. (matched inside decoded stream)
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00000327.bin
e03ed540da4b9372a21483e09ff13f7c0f176f998f3acf3e103125a10c394733		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x327 2323 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
stream_003_off00000829.bin
afa73ca6a37df6f8422721448c90f23c1672df07c881c90f28d89bfd8b96dbb2		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x829 442 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.