PDF malware analysis — malicious · a7bf78a33b15027b

MALICIOUS

PDF

6.6 KB

MD5: 7baa89b6549a8abcf32d529dcae7be3f SHA-1: 7686d5d06694a1493f063523dbc78ee1eef7a212 SHA-256: a7bf78a33b15027be38c71bd2862bde13808f0d781b83f694d3f9fdbdc030d67

86 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/Shell Script Execution

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings and the presence of an extracted JavaScript file. The ClamAV detection 'Pdf.Exploit.Agent-36086' strongly suggests this is a known exploit. The JavaScript is obfuscated, making its exact function difficult to determine, but it is highly probable that it downloads and executes a second-stage payload. The document body is unreadable, providing no further context.

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` `776f9cf16d979d47f36e06c9ea20e80d0c82c2fb0b93c8ad2042a607375d415d`	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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