PDF malware analysis — malicious · a52ac5ddc32707bd

MALICIOUS

PDF

12.4 KB

MD5: aa50189a59217e79c2807934c24b2698 SHA-1: 8b30478dd3545e34891b2a7023d65e65b6932e51 SHA-256: a52ac5ddc32707bd43fdfe9423dae1a46f1dc802801a08f59248ab71955b707a

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript that exploits the CVE-2007-5659 vulnerability in Adobe Reader. This vulnerability allows for the execution of arbitrary code, and the extracted JavaScript streams indicate a multi-stage process likely involving the download and execution of further malicious payloads. The specific exploit mechanism targets the `Collab.collectEmailInfo` functionality.

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` `a03b0f48d97d7414066a95a9d2482b4db54ad904e4cca38b54759a8a8fcc375c`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12135 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `baec6213554cec123e35d9a18ee4fbe822b30ef7bc8038834eb6829ff2aa99de`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4966 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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