PDF malware analysis — malicious · 383caae97899db1f

MALICIOUS

PDF

11.6 KB

MD5: 1576665cd8b8bd5df108eda953679e4d SHA-1: 6512038c3e5b9cdb9bf2fe1fc6593156f1995602 SHA-256: 383caae97899db1f2b1136e86bf0c8e12cf147d232a2eb347017ba9e025520d8

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, flagged by multiple heuristics including CVE-2007-5659 which specifically targets the Collab.collectEmailInfo JavaScript function often used in PDF exploits. The analysis also identified deobfuscated JavaScript files, suggesting the exploit attempts to download and execute further malicious content. The exact payload and delivery mechanism are not fully discernible from the provided artifacts, leading to an 'unknown family' classification.

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` `27337c6ef8cbf250829390bb10ff83fa7c01d1f0cffb8230d4eeaa072fa7e08d`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	11887 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `a37a43348e14d7eebc60c38a6a7ca86ae61c613e5b683e876fb778713154c9e3`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	4909 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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