PDF malware analysis — malicious · 948c50b18fcd2a2f

MALICIOUS

PDF

9.4 KB Created: 2009-06-10 10:46:47 Authoring application: RqVWzTAETvNFocvzCE (via lhqFRzCzkuRPNdzD)

MD5: 9413b1b2e53d0ca2306828384dbbe376 SHA-1: 0bc3db590754045017b85aa2c8722dcdfdb5bcc6 SHA-256: 948c50b18fcd2a2f71faf6257fcddcdacfa5ed55af17ceafecced4bdd8ebab8a

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 'Pdf.Exploit.Agent-35572' strongly suggests exploitation of a known PDF vulnerability. The embedded JavaScript, named 'javascript_obj0009_000.js', is likely responsible for the malicious activity, potentially downloading and executing a second-stage payload. The document body is heavily obfuscated and unreadable, providing no direct clues to the lure.

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_obj0009_000.js` `7aebd9079dc7a84b6650ed38a7f6c7c92bac85e3cf3a610ed66cd88b2ff6faa4`	pdf-javascript-stream	PDF /JS object 9 at offset 0x6DA	7091 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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