PDF malware analysis — malicious · 7a5b6e34cbbf820b

MALICIOUS

PDF

12.7 KB

MD5: 2e11e31742295b535235a60f18d91533 SHA-1: fb89a7fe97aecaa9c87101435be321e1e1099bfe SHA-256: 7a5b6e34cbbf820bcdc1d5a2c1dbdd320c3eed7dc4ebf982be48bdddabc9b145

138 Risk Score

Malware Insights

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 the exploitation of a known PDF vulnerability using JavaScript. The extracted files legacy_pdfkit_stage_000.js and legacy_pdfkit_stage_001.js are likely components of the exploit chain. The ClamAV detection further confirms its malicious nature. The overall pattern suggests a downloader or initial access exploit.

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` `befdd24940cd0dff933958f625dad13dcdcdd4b907de2adb732d360e44da3dd3`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12388 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `20a36f90623b33e0e2ec442e275c5eddf5378b2bf52335aee32dc89e14885a48`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5118 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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