PDF malware analysis — malicious · f004e3183b07aaa0

MALICIOUS

PDF

12.5 KB

MD5: 379766c5128cebbf1bae2ddc28392531 SHA-1: 856cd6745a10d9a10a8fe43b962503bdd358a314 SHA-256: f004e3183b07aaa010232c15db8369fa5cdc81455b588dcdda329d48ea75fb16

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.001 Malicious Link T1204.002 Malicious File

The file is a PDF containing embedded JavaScript, identified by multiple heuristics including PDF_JAVASCRIPT and PDF_JS. The critical CVE_2007_5659 heuristic indicates the exploitation of a known vulnerability via JavaScript. The embedded artifacts, legacy_pdfkit_stage_000.js and legacy_pdfkit_stage_001.js, suggest a multi-stage JavaScript execution chain. The ClamAV detection further confirms its malicious nature. The overall pattern points to a PDF-based exploit kit designed to download and execute further malicious content.

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` `dd4bd9291339e74a151fdc388808691bfe015f55fa034d61e10d33c475f6baa1`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12092 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `f994b30af80df6d257bb261e6a60b86fe2da9e1bb4b008bf5ee8388fed0dcda5`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5021 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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