PDF malware analysis — malicious · b62e094fd96c911b

MALICIOUS

PDF

12.8 KB

MD5: a949fc1b37d47b3f50b38fc6ae310c3c SHA-1: e688d2837be55ed105858c0ae76bccc21eca9fb8 SHA-256: b62e094fd96c911bd7e902cbaf56a21d3e48e5072c465bc3c796b3fe7af4cd8a

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript that leverages the CVE-2007-5659 vulnerability through the Collab.collectEmailInfo function. This exploit is designed to execute arbitrary JavaScript, which in this case is likely used to download and execute a secondary malicious payload. The presence of deobfuscated JavaScript files further supports this attack vector.

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` `bb72ad6f83420ff5fda245db67f0025df8f8b25ed447e4a19f96db3ba1115903`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12532 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `3fab27b18c53d4dfbb717d96c616b8d583953c98100fe1fc64563c266b1acd80`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5175 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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