PDF / .TXT malware analysis — malicious · f3a275f2e39a9d9a

MALICIOUS

PDF / .TXT

13.1 KB

MD5: 2739ff0412bbe48ed75530a02624e27b SHA-1: 8578b2235ec436b22a1fd8cfc2eaa380b03951bb SHA-256: f3a275f2e39a9d9aa299c585c4f4d30c458720fbb3b266f40c714b572360427b

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The critical heuristic CVE_2007_5659 indicates the exploitation of a PDF vulnerability using JavaScript. The embedded JavaScript streams and deobfuscated JS files suggest the execution of malicious code. This code likely attempts to download and execute a second-stage payload, as indicated by the presence of multiple JavaScript files and the ClamAV detection signature 'Pdf.Exploit.Agent-36064'. The attack pattern is consistent with a PDF-based exploit delivery mechanism.

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` `2eb9d0f830459916cb8a5ba9aba820a253e271410fb496f970b1bc43b350df42`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	12125 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `64cbda6084d0ec380354b5c0a26f56a2912e6db3721bd6276cdeff3de0049a20`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	5056 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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