PDF malware analysis — malicious · aae435e4e74515b4

MALICIOUS

PDF

13.2 KB

MD5: b9847b49f50aa6ad3264b681d1cc4fe5 SHA-1: acef9c55ebb63ceb44b0ab9971d4ca1615017d11 SHA-256: aae435e4e74515b481b10f23ad7f9dbe5e58bc0300419e7a498ad7f35760041b

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript, identified by multiple heuristics including CVE-2007-5659 which specifically targets the 'Collab.collectEmailInfo' function. This function is known to be used in PDF exploits to execute arbitrary code. The presence of deobfuscated JavaScript files further indicates malicious scripting. The ClamAV detection confirms its malicious nature, classifying it as Pdf.Exploit.Agent-36064. The attack pattern involves leveraging a PDF vulnerability to run malicious scripts.

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-36064 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36064
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` `a5c8f0f722df4dd9876a0087e1eee65bd3020c5995f94f6729f7e17f3f3677a0`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19D	331 bytes
`legacy_pdfkit_stage_000.js` `0b54f8ae01926ce38f7ef59317719df44568d51ecbb3584c01395d1eca402147`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	12319 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `632cd32bb97d5dec0ee3d7df87546ae54c9fd2d6427217541bedefb5094e56b3`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	5154 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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