Malicious PDF — malware analysis report

Static analysis result for SHA-256 e32acebb909c1563…

MALICIOUS

PDF

6.6 KB First seen: 2026-05-11
MD5: b6aa941a513659ac65faffbbccc6a728 SHA-1: 08b3ce177f76b557162efb170592538dcad420d5 SHA-256: e32acebb909c1563dfde06118e1b0bf70e8554c87c1f50768323906fafc01513
150 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings related to PDF JavaScript actions and streams. The presence of an unescape() call suggests obfuscation, commonly used to hide malicious code. While no specific malicious URLs or scripts were directly extracted, the overall structure points to an attempt to execute arbitrary code. The benign URLs present do not detract from the suspicious nature of the embedded script.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9833

Heuristics 5

  • JavaScript action low 2 related findings 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)
  • PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER
    PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
    Matched line in script
    RandomVar1=unescape(RandomVar1);
  • 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# In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00000326.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x326 1093 bytes
SHA-256: 6598449aea8c1e5a302bbde7aee4a0f1c01f0818bf09228d304a8daa118ee5ab
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_off0000067b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x67B 442 bytes
SHA-256: d06907e4f6f93cb902151a673ed6d2a2c4b96f156d08e675dbd281136c7e6458

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