PDF malware analysis — malicious · 523b21de563d5bac

MALICIOUS

PDF

22.2 KB Created: 2011-72-51 03:25:00

MD5: 7dd98275f081b07a7cffd5a28bfc659b SHA-1: ecd79a3682a8b8708279b8e67907288a6dd0d05d SHA-256: 523b21de563d5bac763f6d1a2750ed022149c7fe25e4b55406e09d6589b3628b

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File

The PDF file contains embedded JavaScript, which is obfuscated and uses an eval() call. This indicates the script is likely designed to exploit a vulnerability within the PDF reader to download and execute a second-stage payload. The ClamAV detection name 'Pdf.Exploit.Agent-36198' further supports this assessment.

Heuristics 5

ClamAV: Pdf.Exploit.Agent-36198 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36198
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.
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_obj0001_000.js` `dc2b0ca02c64252419cb119449fb08467125404d59f5d2ddcf0ed86e776f7a15`	pdf-javascript-stream	PDF /JS object 1 at offset 0x5655	394 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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