PDF malware analysis — malicious · 336c4db2bde620f2

MALICIOUS

PDF

11.3 KB

MD5: fba075670f89abe0e7bc199d5659ff48 SHA-1: 43b26b9f57df6fd22d99939d1681ac79d79e91c4 SHA-256: 336c4db2bde620f27b8bbc99877a0fcfabe48d5fb814a304ae6589438dc3fe2e

146 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript that leverages the CVE-2007-5659 vulnerability. This exploit is designed to execute arbitrary code, as indicated by the ClamAV detection 'Pdf.Exploit.Agent-36079'. The JavaScript is heavily obfuscated, but the core functionality appears to be the exploitation of this specific CVE. The presence of multiple JavaScript streams and the critical heuristic firing for CVE-2007-5659 strongly suggest this is a malicious PDF dropper.

Heuristics 6

Collab.collectEmailInfo — CVE-2007-5659 critical CVE exact CVE_2007_5659

PDF JavaScript calls Collab.collectEmailInfo — CVE-2007-5659 is a buffer overflow in Adobe Reader triggered by a long argument or heap-sprayed message field passed to Collab.collectEmailInfo(). Part of a series of Acrobat JS API exploits. (identified after JavaScript deobfuscation)
ClamAV: Pdf.Exploit.Agent-36079 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36079
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. (matched inside decoded stream)
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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `ef8bdac794684ae9cd4eb7091d80e1c5ca478c06c639d72d01626c1f7ce78b6d`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19C	578 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `e7e2f374fab1a0ef3006491caf7011abc7a838ac4f5e1055aadb9ebca8a60288`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x36F	11752 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `12d02484727f5e76b5476301cef4e4b6eaa3be821ed5ed3e44d52f1a9e46ec92`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x36F	4769 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.