PDF malware analysis — malicious · 4725616535a9f61f

MALICIOUS

PDF

12.2 KB

MD5: 17b09389dcd3674dd95669b37337faf9 SHA-1: 119b04b76c3011a451c9553e181868756d3f07af SHA-256: 4725616535a9f61f0c5fb29633a2a1138a644b673c2b057376cc2bd56732536b

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript, identified by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE-2007-5659 heuristic indicates the exploitation of a known vulnerability via JavaScript. The extracted artifacts 'legacy_pdfkit_stage_000.js' and 'legacy_pdfkit_stage_001.js' suggest a multi-stage JavaScript execution, typical of exploit kits designed to download and execute further payloads. The ClamAV detection further confirms its malicious nature.

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` `b3bab0df6a9198e806281bd1d43d5e302540b86ac56bb217ec2064858763d408`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12086 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `d5ba143bd5f3d0bfa5348bf5f3603a1fb72c25095b6a4d4f5c3cb828ec28b462`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4979 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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