PDF malware analysis — malicious · 2cde92d7fc17c367

MALICIOUS

PDF

12.3 KB

MD5: c06e7ee6489b123d5762a769e600d9c0 SHA-1: 5e21a73f511ef81b65b6ca8d8d0091ffeac46040 SHA-256: 2cde92d7fc17c367f17a4589fa6301e04d2c72156cfad83b8137bce1ca650696

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/Shell Script Execution T1204.002 Malicious File Execution: Malicious JavaScript

The PDF file contains embedded JavaScript that exploits CVE-2007-5659 via the Collab.collectEmailInfo method. The heuristics indicate that the JavaScript is obfuscated and likely intended to download and execute a secondary payload, as suggested by the extracted JavaScript files. 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-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` `71589733eaa3e756bb4c62ddb7b1171d9b9d4c3958a0fada40cb9d976eb85e64`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12055 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `5a2d8336ee9a887dffac39578b3d19846bdd1c35067acab88e12a90c7b5d115f`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4942 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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