PDF malware analysis — malicious · 3b05928151c13bca

MALICIOUS

PDF

12.9 KB

MD5: c431ad9fec93af17ac7e91fe18ab65c7 SHA-1: 83be5f9f0c149651e9cdfab8ebcdb7bb2f51cbbb SHA-256: 3b05928151c13bca170175720a27abb6b18f2a992b4b498d9e46155b684de255

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/Shell Script Execution T1204.001 Malicious Link/Object

This PDF file contains embedded JavaScript that leverages the CVE-2007-5659 vulnerability (Collab.collectEmailInfo). The JavaScript is obfuscated and likely intended to download and execute a secondary payload, as indicated by the extraction of deobfuscated JS files. ClamAV also detected this as Pdf.Exploit.Agent-36062.

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` `67f29acd570cb63f6a932696d62524401039822665974d9b359ab097ed9fb1ff`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12581 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `14bfa4bb542a47d455a00f33a4206948f69d251d59c8e522bd03ba1dc2244082`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5224 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.