PDF malware analysis — malicious · edf3d633dfd6f0e9

MALICIOUS

PDF

12.7 KB

MD5: 13290a39cba5279f5964b65c9321192b SHA-1: fdb80352cf8bd8290b40b9e73327e2dc05208fdf SHA-256: edf3d633dfd6f0e96becd6ae96c90d4e02b23c86d1a9ef3c778359c95d489123

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 heuristic 'CVE_2007_5659' specifically points to the exploitation of a known vulnerability using JavaScript. The presence of deobfuscated JavaScript files ('legacy_pdfkit_stage_000.js', 'legacy_pdfkit_stage_001.js') suggests the script is designed to download and execute a second-stage payload. 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` `bd0194c10b96de19950364ad0cf92b11eaf0968623174be765da6a662aee2a58`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12441 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `71d9e32947dafd3a1540401787797613b37b7f6e1bb019cb1b139dc67982f547`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5166 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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