PDF malware analysis — malicious · 8ba41de6f5ec8fec

MALICIOUS

PDF

17.5 KB Created: 2010-03-03 19:02:47 Authoring application: dqFchK (via wnGeBHTivube)

MD5: 98027d7eadcfb1fca4d7ebdf5f791835 SHA-1: ae15bb9cf7d16364d7e2081935ad8a136b8412e7 SHA-256: 8ba41de6f5ec8fecde358d5a2d5a525f959de81e95c15b03a1c4251937b0975e

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The critical ClamAV detection of 'Pdf.Exploit.Agent-14188' strongly suggests exploitation of a known PDF vulnerability. The embedded JavaScript, although obfuscated, likely serves to download and execute a secondary payload, a common technique for initial access.

Heuristics 6

ClamAV: Pdf.Exploit.Agent-14188 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-14188
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.
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` `84cd9d89557dce11baa2aa8fadb61a934f41e6382d9ed03ae5f158a0bff1464a`	pdf-javascript-stream	PDF /JS object 7 at offset 0x23F	16741 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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