PDF / .TXT malware analysis — malicious · e12e46e5f7bd7462

MALICIOUS

PDF / .TXT

12.5 KB

MD5: e0f7c64cfab6c12cb33dfaf2433a2aed SHA-1: f083f68ee66aab25f2e3fd31f34014784d544f8a SHA-256: e12e46e5f7bd7462f508023e59feb9db6dd475ce051284a9885ec695af37e53f

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is a PDF containing embedded JavaScript, identified by heuristics as exploiting CVE-2007-5659 via the 'Collab.collectEmailInfo' method. The embedded JavaScript streams, deobfuscated into 'legacy_pdfkit_stage_000.js' and 'legacy_pdfkit_stage_001.js', indicate the likely intent to download and execute a second-stage payload. The PDF structure and JavaScript execution point towards a common 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` `28e9f5ffbf2bc9fc6ef4f1a91e9425217aa8e95766800804486590e1b7bc31de`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	11594 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `9286879cd1365441d90b3b519b11dd39b6999a6676e10bb8f7f101a42da81b03`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	4776 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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