PDF malware analysis — malicious · b1819e2c1f16acf7

MALICIOUS

PDF

11.8 KB

MD5: 2cea533d1b55441c8be37b8021263a49 SHA-1: 35142e1d1d7967dcbb74485d6565b4ef98e61a35 SHA-256: b1819e2c1f16acf7c388b960deba31e8861c5ceb39c3abb7177b322958ea97d8

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript and triggers a critical heuristic for CVE-2007-5659, indicating an exploit attempt. The presence of deobfuscated JavaScript files suggests the execution of malicious code. This code likely downloads and executes a second-stage payload, as indicated by the ClamAV detection name 'Pdf.Exploit.Agent-36065'. The attack pattern is consistent with exploiting PDF vulnerabilities to deliver further malware.

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` `2f63155bce822c8b6ee5c83949625a9ad42e11e590fb2ae34e1f97d372f6d7c1`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12233 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `5f6ff79503c261ec8268e48f4676526647619f14c7c36a92839352fdcac4df63`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5050 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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