PDF malware analysis — malicious · 24ce26f5f5b799e5

MALICIOUS

PDF

12.3 KB

MD5: c65b93e08d32cc29f1d27bf8ae2d1fd6 SHA-1: 32ac5b53c65efe105398b6c1d295bfc5da9741af SHA-256: 24ce26f5f5b799e5a70da218f51e0c679cad737c1fd731f48d93bfb83375f841

138 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains embedded JavaScript that exploits the CVE-2007-5659 vulnerability using the 'collab.collectEmailInfo' method. This JavaScript is further obfuscated and split into multiple files, indicating an attempt to evade detection. The primary function of the script appears to be downloading and executing additional malicious content, as suggested by the presence of deobfuscated JavaScript files named 'legacy_pdfkit_stage_000.js' and 'legacy_pdfkit_stage_001.js'.

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` `8d65ca8878b31fcc1468b9c4338e7a80c3082ad62b57c848726d377e6373273b`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12056 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `41bb2ad89373b9000429dda286b91d8dbf291294f96fe5906c3a882248601e22`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4920 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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