PDF malware analysis — malicious · 8063da7546533709

MALICIOUS

PDF

7.6 KB Created: 2009-05-04 19:19:41 Authoring application: psZGxYqLmzkEvBetBm (via hRrgNRoIXzYTf)

MD5: 74926dbae8abc15ee77f3557ddc482bf SHA-1: 4f75903305618f13dcf197ee0223c7e0ceb737ca SHA-256: 8063da7546533709c57daf0e41a749cc3ec7109f5b9e840e4589076e2ba70290

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 ClamAV detection of 'Pdf.Exploit.Agent-35572' strongly suggests it's a known exploit. The extracted JavaScript, though obfuscated, likely facilitates the execution of a secondary payload, a common technique for malware delivery. The file's structure and heuristics point towards an exploit attempting to compromise the user's system.

Heuristics 5

ClamAV: Pdf.Exploit.Agent-35572 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35572
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.
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_obj0007_000.js` `fc7454e731c09ecf40d658a8c7355d072ecea3ee45f31eef021e3c3a19fd5e8d`	pdf-javascript-stream	PDF /JS object 7 at offset 0x352	6110 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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