PDF malware analysis — malicious · 492c20dcec373d8d

MALICIOUS

PDF

11.6 KB

MD5: 2e88ab0d90c722a2203bead832aa4fc7 SHA-1: b3f6945ff837163494255431aaa7490770d72b8b SHA-256: 492c20dcec373d8d04f5f516c9624bd00d3c6411d8b7ba778316aa8dbac413ed

138 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 JavaScript

The PDF file contains embedded JavaScript, specifically leveraging the CVE-2007-5659 vulnerability via the Collab.collectEmailInfo method. This JavaScript is further deobfuscated into two separate files, legacy_pdfkit_stage_000.js and legacy_pdfkit_stage_001.js. The presence of these deobfuscated scripts strongly suggests the intent is to download and execute a second-stage payload, a common technique for initial access.

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` `bccc1a4471be1a8a7d2656f7d9c5cab333ec457b3f4837339b5163fc48887430`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	11902 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `257ac10c7dc49d5b37080800260301d88cf43119d75733fe1de912b6890edb37`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	4904 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.