PDF malware analysis — malicious · d2c1ff8340c1db60

MALICIOUS

PDF

12.3 KB

MD5: e6e25054ac0eb95d5e4747e5468a7b15 SHA-1: c5d57822a8bc767952f05054d047037711dd5876 SHA-256: d2c1ff8340c1db603d2dde4394abc8dc0c86b3709bf5afb04dc4cd76afa70e7f

138 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains embedded JavaScript that exploits the CVE-2007-5659 vulnerability, specifically targeting the Collab.collectEmailInfo function. This exploit is designed to execute arbitrary JavaScript code, which is then used to deobfuscate and likely execute further stages from the extracted files legacy_pdfkit_stage_000.js and legacy_pdfkit_stage_001.js. The primary goal appears to be the download and execution of a malicious 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` `e3436d059d8c940e107f5945e5d13ca1709c818a06ca4445ec920be7f7f8e4ce`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12074 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `055ed774ba487cec21a3abf5a960c58088a72ec2bd616efff6c573a7ad96b03a`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4978 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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