PDF malware analysis — malicious · 479d91d4ba90a804

MALICIOUS

PDF

12.5 KB

MD5: afd1f592743d5cdda8c586df0aa694cb SHA-1: 83a15e50c62b9c6e0449b904f1a451e265dd1d92 SHA-256: 479d91d4ba90a804954fc229ade3029d28a4bddd8bf0f3dc6843da755e989891

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that exploits CVE-2007-5659, specifically using the Collab.collectEmailInfo method. This JavaScript is further deobfuscated into multiple stages, indicating a downloader or dropper mechanism. The presence of multiple JavaScript files and the critical heuristic firings strongly suggest the execution of malicious code to fetch and run additional payloads.

Heuristics 5

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-36062 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36062
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.
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` `068944f8c011a88ab770b45c6de142b9305a1f515d410204d5eadd9ac2b5bfb3`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19B	373 bytes
`legacy_pdfkit_stage_000.js` `40baf12f160fad15694b4934e8213ba2d2e50142c47e46b0d3d204b79b686a2d`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12146 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `ccb6aacd0f62d786c5a0753ca1553398a3f257504dbad03b90de2ecd5deac67b`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5020 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.