PDF malware analysis — malicious · 2ed88546bcb0446b

MALICIOUS

PDF

12.1 KB

MD5: ec9408eb7c190e066267ceba86afd6af SHA-1: f2770e4fef386e4277489c06e19560d3b3f3ebac SHA-256: 2ed88546bcb0446be3149e2e464b9c948e86e169b53e52f23c454d24c251319c

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious File

The PDF file contains embedded JavaScript, identified by multiple heuristics including PDF_JAVASCRIPT and PDF_JS. A critical heuristic specifically flags the CVE-2007-5659 vulnerability, related to the 'Collab.collectEmailInfo' function, which is used to construct and evaluate JavaScript. This indicates the file is designed to exploit this known PDF vulnerability. The presence of deobfuscated JavaScript files suggests the script's purpose is to download and execute further malicious content, a common technique for initial payload delivery.

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` `48d421938372f0130d74148783593bd6a4ac28cfcf380193c4fb6c9500868bef`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12582 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `c9c91a4c3ac8d06813457cf583e95f34ba9847cb2c7564daf877b55dad1a25ac`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5115 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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