PDF / .TXT malware analysis — malicious · 4dc1ba84d466b29d

MALICIOUS

PDF / .TXT

12.9 KB

MD5: 03d57b62088701e15caabd650b3a7a9b SHA-1: 4d6961f484397aa3150d426e54c021bb3c65149e SHA-256: 4dc1ba84d466b29d9c23fadff25221f7748dca5a7f8a705e6f4d073ac6dfee72

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, identified by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE_2007_5659 heuristic indicates the use of a known PDF exploit technique involving the `Collab.collectEmailInfo` method to execute JavaScript. This script is likely designed to download and execute a second-stage payload, as suggested by the extracted files `legacy_pdfkit_stage_000.js` and `legacy_pdfkit_stage_001.js`. The ClamAV detection further confirms its malicious nature.

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-36064 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36064
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` `a5c8f0f722df4dd9876a0087e1eee65bd3020c5995f94f6729f7e17f3f3677a0`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19D	331 bytes
`legacy_pdfkit_stage_000.js` `76f3c449c7cefba096f7613168437e165d7e053d22e2aaaf11751ec11a6173c2`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	12006 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `fae2982d98013502fb282f8ca98009a8704a311014d3d9698f72aae617f19577`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	4991 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.