PDF malware analysis — malicious · 24ab5176a7e202ae

MALICIOUS

PDF

11.8 KB

MD5: c545c52846f0cde30497e129c0d95171 SHA-1: a074b05445b4d0e7004d5fe2a1cf7f5b18fabd77 SHA-256: 24ab5176a7e202aeb18925e8d1df5447d6d6ee7c503b0b8e61a6a416a730e16b

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings related to PDF JavaScript actions and streams. Specifically, the 'CVE_2007_5659' rule highlights the use of 'Collab.collectEmailInfo' which is known to be used in PDF exploits. The embedded JavaScript is likely responsible for executing the malicious payload, leading to the 'malicious' verdict. The file's structure and the presence of deobfuscated JavaScript files suggest a multi-stage exploit.

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` `a39428ca0b0992bc787a3e61c6a1dc087b08d09c1dcdee75ff5037de114a6fcf`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12281 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `88b040f8b46a8b7f7796b82c488f232b4dba2797ff6cd33151f1b2cc714780b9`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5026 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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