PDF malware analysis — malicious · 9dbe583d8b8c6bb4

MALICIOUS

PDF

12.9 KB

MD5: 0baf3f042e0442be5c9971b360f724d9 SHA-1: dda2fb53fce58cb92beb486c39fa5e7317897325 SHA-256: 9dbe583d8b8c6bb42cc51dbe3fc8b814a6c3824964ee9c0a43af79089c00c9cc

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF file contains embedded JavaScript, identified by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE_2007_5659 heuristic indicates the use of a known exploit technique involving the 'Collab.collectEmailInfo' JavaScript function to execute arbitrary code. The presence of deobfuscated JavaScript files (legacy_pdfkit_stage_000.js and legacy_pdfkit_stage_001.js) suggests a multi-stage attack, where the initial PDF likely serves as a dropper for further malicious activity. The ClamAV detection 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` `93fc7ff40d9bf337ef3e69b40765a4b0370ab3ab4537aef3e4ed163fde76503a`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12648 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `3b93080c7f5a389e6cde62af4d7ddd9868082f82627e56ccb248ee0f882d5b9d`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5256 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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