PDF malware analysis — malicious · 925e565c6b65fd76

MALICIOUS

PDF

69.9 KB Created: ÜÐ037ß)G034BG§&±x¾æÂËô.s First seen: 2026-05-10

MD5: 8cc986d62faa7e327bc1ada3f39526f2 SHA-1: c243a1dcd158a64c5e3be22d6fb03d34a432c1a7 SHA-256: 925e565c6b65fd769066d49de6df4d548da49165a193f6320f9aa596349adca6

150 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.001 Spearphishing Attachment T1027 Obfuscated Files or Information

The PDF is encrypted and contains JavaScript, a common technique to obfuscate malicious content and evade static analysis. The embedded JavaScript stream, though small, is indicative of an attempt to execute code. The presence of an embedded URL suggests a potential download or redirection to a malicious site. The heuristic 'PDF_ENCRYPTED_WITH_JS' strongly indicates that the payload is hidden and likely malicious.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

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.
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.
Encrypted PDF carries /JavaScript — payload hidden from static analysis high PDF_ENCRYPTED_WITH_JS

PDF declares /Encrypt and also references an executable trigger (/JavaScript). Document encryption hides the JavaScript body and stream contents from static scanners — combined with auto-execution indicators this is a known evasion pattern used to deliver weaponised JavaScript that the analyst cannot inspect without the decryption key.
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.cadkas.com In PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0020_000.js`	pdf-javascript-stream	PDF /JS object 20 at offset 0x69F8	46 bytes
SHA-256: `d3b3619843a9765d54ecc0d81f8728e633434bc486e3888d07256848d199d3df`
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
Preview script First 1,000 lines of the extracted script eval('eval("'+this.getField("e").value+'");');
`javascript_obj0021_000.js`	pdf-javascript-stream	PDF /JS object 21 at offset 0x1847	46 bytes
SHA-256: `11dd3dd5217a269b6e477c77d269b1bf182a5c6d0f312ad5b43892728b614d88`
Preview script First 1,000 lines of the extracted script x�h��W�ۣ� y� `�]��ӎg_u�� v � j�T[�7ا�R��

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