PDF malware analysis — malicious · e9d507062142e0b0

MALICIOUS

PDF

11.7 KB

MD5: fac8cadc68b21a25b03734a2696748d1 SHA-1: 32c16af76461984393dce0ac9515d7b4a9dcb060 SHA-256: e9d507062142e0b05bbd620dba63b0715672066da5c2a34315b17aa98667afb2

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The critical CVE_2007_5659 heuristic specifically points to the use of Collab.collectEmailInfo for JavaScript execution, a known technique for exploiting PDF vulnerabilities. The extracted JavaScript files suggest a multi-stage process, with the initial PDF likely acting as a loader for further malicious activity. The file is detected by ClamAV as Pdf.Exploit.Agent-36065.

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-36065 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36065
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` `9c67560e8c63b720885d3efc1627b844b86a6ec08e99e5b65a22eae832045756`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19C	431 bytes
`legacy_pdfkit_stage_000.js` `3074204d9e585cb27f50a170997aefa8cf79d0728ce3828fbe4deef49d074676`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12026 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `e5230915ae2f5594249e3bbb27d588787405719ecf795355ae7f267b066910f9`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	4958 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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