PDF malware analysis — malicious · 984731c03d9e7660

MALICIOUS

PDF

6.6 KB

MD5: c59787196913066e35414f059dc60d09 SHA-1: c17dca46e23292490c360842291d36f8a76c8fe0 SHA-256: 984731c03d9e76602ee42a7e73d401d9b7abb844630239fbad51dfc32e18affe

86 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The embedded JavaScript stream, named 'javascript_obj0006_000.js', is large and shows obfuscation indicators. This JavaScript is likely responsible for exploiting a PDF vulnerability to download and execute a secondary payload, as suggested by the ClamAV detection 'Pdf.Exploit.Agent-36086'. The lack of readable document body text prevents a more specific determination of the lure, but the technical indicators point to a malicious exploit delivery mechanism.

Heuristics 5

ClamAV: Pdf.Exploit.Agent-36086 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36086
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_obj0006_000.js` `e2c88aa803abb93930bb6bb6f0ce21fa3fdf42ffdc21cc932727344b36d4bbbf`	pdf-javascript-stream	PDF /JS object 6 at offset 0x143	137519 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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