PDF malware analysis — malicious · 47fb35434c5e130e

MALICIOUS

PDF

12.4 KB

MD5: c4adedbdebf15e585ab63eac75f49c48 SHA-1: 6e6dc79578a5dfb302e948eb1b130d3845cbddbf SHA-256: 47fb35434c5e130e9ef2ba1a4de9814988a07ef6cf6fcb5dc1f58350921e87cf

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, identified by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE_2007_5659 heuristic indicates the exploitation of a known PDF vulnerability using JavaScript. The embedded JavaScript streams, named legacy_pdfkit_stage_000.js and legacy_pdfkit_stage_001.js, likely work together to download and execute a secondary payload. The ClamAV detection further confirms the malicious nature of the file.

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` `4e115e522ea4e0a4987f9654d58426048533c6e8a2989fe63a60b676040595dc`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12009 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `055a190c64ff15e044d64c1e2de85f61c9dff175db4e311094c4d0bcbaa1c43c`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4975 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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