Pdf.Dropper.Agent-7323153-0 PDF malware analysis — malicious · f25b1248ee11afb4

MALICIOUS

PDF

12.4 KB

MD5: 2804d8cea14305326cc841cca4d4f306 SHA-1: 07d7c3732da7684cda6a4b3259aa0d2a0c379a89 SHA-256: f25b1248ee11afb4ff4076046380fec13bb5840b9b6f65a0d0bb975f0aa84e60

140 Risk Score

Malware Insights

Pdf.Dropper.Agent-7323153-0 · confidence 95%

MITRE ATT&CK

T1059.001 PowerShell 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 exploitation of a known PDF vulnerability using JavaScript. The extracted JavaScript files, legacy_pdfkit_stage_000.js and legacy_pdfkit_stage_001.js, are likely responsible for downloading and executing a second-stage payload, as suggested by the ClamAV detection name Pdf.Dropper.Agent-7323153-0. The file's purpose is to act as a dropper for further malicious activity.

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.Dropper.Agent-7323153-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7323153-0
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` `1847af0a099665b6ac45af66402e56ed64237a1b287618ee3d6643267fda6f35`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19D	343 bytes
`legacy_pdfkit_stage_000.js` `c5168c9c7313732de8e5587f5372869ffa5c26b5efa6e8ef2e982efd67c5b031`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F0	11956 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `edfe25a152f504d65549abc62e7f08c3115e0b12a6cf6c1f22441f2a1b1fb548`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F0	4968 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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