PDF malware analysis — malicious · f04e946f6b58e2f3

MALICIOUS

PDF

903 B First seen: 2026-05-11

MD5: c28ef120722357b94acc7d9b7bfe065e SHA-1: d2e16e4d9d08947aaf5f6d6a03d97fe414a3563c SHA-256: f04e946f6b58e2f30d6852bf7ef2bb5bd27742ef677d619c1f46bca132f0247b

150 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains embedded JavaScript with an eval() call, indicating an attempt to execute arbitrary code. The JavaScript itself is obfuscated and appears to be a downloader. The heuristics suggest JavaScript execution within the PDF, and the eval() call is a strong indicator of malicious intent. No specific family could be identified due to the obfuscation.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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.
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
```
eval("app.alert('baaaaa')");
```
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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0012_001.js`	pdf-javascript-stream	PDF /JS object 12 at offset 0x236	337 bytes
SHA-256: `2070a9652ce79805b84388ec8932cde09b65c2412b5598f229ef4d54ea8277f9`
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
Preview script First 1,000 lines of the extracted script eval("app.alert('baaaaa')"); endstream endobj xref 0 7 0000000000 65535 f 0000000017 00000 n 0000000101 00000 n 0000000165 00000 n 0000000209 00000 n 0000000287 00000 n 0000000339 00000 n trailer << /Root 1 0 R /ID [<2B8AC9FAB69B320551A0B85B882985F7> <2B8AC9FAB69B320551A0B85B882985F7>] /Size 7 >> startxref 428 %%EOF

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