PDF malware analysis — malicious · 010adf511339df3a

MALICIOUS

PDF

3.7 KB

MD5: d99d0f5806d0108e7b056b79ccf40e36 SHA-1: 60ac79ef7679d903d86ee5eb5436c30d078ff2e9 SHA-256: 010adf511339df3a918710621ac0fd37235f203d18d86bc4f3b37d4c61dcc4f5

116 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1071.001 Web Protocols

The PDF contains obfuscated JavaScript that is designed to exploit a known vulnerability. The script attempts to download and execute additional payloads from a list of hardcoded URLs, indicating a downloader or droppper functionality. The ML classifier and exploit cluster heuristics strongly indicate malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

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.
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.
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.
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj123452_000.js` `18e5fdccd07c1cd76c1f11f42682873e1080ee729ccdaf5f7423b4b1abfa2a85`	pdf-javascript-stream	PDF /JS object 123452 at offset 0x1E5	5465 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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