PDF malware analysis — malicious · ba2b2fcecb50f044

MALICIOUS

PDF

8.3 KB Created: 2010-05-12 12:34:39 Authoring application: hepYwsxknUbZNyk (via FVXWnQVrlRUnnlsM)

MD5: 207ccc4e2b24942a545cb386c06b961a SHA-1: d0a4f789fb6f3d751b053094d826f2536c69c088 SHA-256: ba2b2fcecb50f0448d6bab9c0022cf574423988f14f673be8fbb84e2babdac07

86 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The script is obfuscated, as suggested by the String.fromCharCode usage and the 'Script obfuscation indicators' heuristic. ClamAV detection as 'Pdf.Exploit.Agent-35572' strongly suggests it exploits a PDF vulnerability. The embedded JavaScript file 'javascript_obj0007_000.js' is likely responsible for downloading and executing a secondary payload, which is a common technique for initial access.

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` `d0746f049c955798169899c22e861460a09ffffdd1e3921f5eff887c859ed4f1`	pdf-javascript-stream	PDF /JS object 7 at offset 0x48C	6566 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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