PDF malware analysis — malicious · a0d6c91dee7cba59

MALICIOUS

PDF

12.6 KB

MD5: f955cfbcb6e1041eb3c84e49d72b870b SHA-1: 7332a11f632dae5028df1b92686925ba137c29af SHA-256: a0d6c91dee7cba5961b3a7fff19531ba7c791121609b72af9f1a708afe53e02e

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

This PDF file contains embedded JavaScript, identified by the CVE_2007_5659 heuristic which specifically flags the use of 'Collab.collectEmailInfo' for JavaScript execution. The embedded JavaScript streams, including 'legacy_pdfkit_stage_000.js' and 'legacy_pdfkit_stage_001.js', indicate a multi-stage exploit. The primary function appears to be leveraging the CVE-2007-5659 vulnerability to achieve arbitrary JavaScript execution within the PDF reader, likely to download and execute a secondary payload.

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` `340fe014c07aaf2df134b3ee18299f605d452f7efd316530a551eb00eff3aa93`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12321 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `e91299848fae8cc0420ff82662505068f043baa266fad0e57ff024e3459bf8c4`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5042 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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