PDF malware analysis — malicious · de386c2f3311f72a

MALICIOUS

PDF

11.5 KB

MD5: aee3d421dfeeee45bd17593774361f5a SHA-1: dcc0bef37652367bdd42e7f600c6263e92383ade SHA-256: de386c2f3311f72a9a94d970b7ba06901864e765dfaa5fd8e59d3d0253c0b9e6

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, identified by multiple heuristics and ClamAV detection as Pdf.Exploit.Agent-36065. The critical CVE_2007_5659 heuristic indicates the use of a known vulnerability involving the 'collab.collectEmailInfo' JavaScript function to execute arbitrary code. Deobfuscated JavaScript files were extracted, suggesting a multi-stage attack. The primary intent appears to be the execution of this embedded script, which likely downloads and executes a second-stage payload.

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-36065 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36065
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` `9c67560e8c63b720885d3efc1627b844b86a6ec08e99e5b65a22eae832045756`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19C	431 bytes
`legacy_pdfkit_stage_000.js` `9771a6cc17cf2a7e2f4a2a8adb366fa7bed1e5dea62bcf4759d4ed0fb7c5a76e`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	11741 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `3fbdd5e40dc634caeac3f515ebe9c98e9a298a0e987ee499f6fbc4886fbb73b4`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	4799 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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