PDF malware analysis — malicious · d4e151b928251e6d

MALICIOUS

PDF

12.6 KB

MD5: ab4f6cb18ee9d4215b16f810ba8cfbfb SHA-1: 9dd30f4837d5f8acd6e8051f4124e171d8b52405 SHA-256: d4e151b928251e6de69fe614dbcf5b2e1d5c4c5811a7630b9a2311dcd076fa82

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 that leverages the CVE-2007-5659 vulnerability, specifically targeting the Collab.collectEmailInfo function. Static analysis indicates this JavaScript is designed to download and execute further malicious content, as evidenced by the extracted JavaScript files 'legacy_pdfkit_stage_000.js' and 'legacy_pdfkit_stage_001.js'. The ClamAV detection 'Pdf.Exploit.Agent-36062' 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` `6b397ed194157e4275a1ad77ae328ee45b946c131552210eda28e42bfde3e1ce`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12424 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `38ac4116c46b1807df0acca6a63962e38e6286e3824366cedcd93c36c9d62224`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5063 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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