PDF malware analysis — malicious · e454c04f24dd3c6a

MALICIOUS

PDF

226.2 KB

MD5: 93e4133d37164b99043ec90b242036f4 SHA-1: db5c55e9cf87a2e093b7890e42882c60309c5c31 SHA-256: e454c04f24dd3c6a125360874eaf1ecef37dc0ea33b5f3c302482b7ba7e6213c

126 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 presence of a PDF_EVAL and PDF_FROMCHARCODE rule firing suggests the JavaScript is obfuscated and likely malicious. ClamAV detection as 'Pdf.Exploit.Agent-36086' further confirms malicious intent. The primary attack pattern involves exploiting a PDF vulnerability to execute this script, which is expected to download and execute a second-stage payload.

Heuristics 6

ClamAV: Pdf.Exploit.Agent-36086 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36086
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
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` `084f89243576455dd25a9178f72cd9c0d349e754a6283ead4dfc8ec7eef3d0e0`	pdf-javascript-stream	PDF /JS object 6 at offset 0x143	322533 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 10 long base64-like blob(s).

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