PDF malware analysis — malicious · 2451dd8533d6cbe7

MALICIOUS

PDF

13.0 KB

MD5: 08c506a7d70feb5bfe68bd5db276d682 SHA-1: eab9a3a2b1c70fa245f99bd7ef86f5f62dd03b26 SHA-256: 2451dd8533d6cbe73d95e7c6c64b3f8c1915bc3c1df4268705320e3ead2995f1

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious Link/URL

The PDF file contains embedded JavaScript that exploits CVE-2007-5659, a known vulnerability in Adobe Reader. The heuristics indicate that the JavaScript is used to concatenate and evaluate strings, a common technique for obfuscating malicious code. The presence of deobfuscated JavaScript files suggests the sample is designed to download and execute further stages of 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-36064 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36064
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` `a5c8f0f722df4dd9876a0087e1eee65bd3020c5995f94f6729f7e17f3f3677a0`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19D	331 bytes
`legacy_pdfkit_stage_000.js` `6abbd3dd074e26a5a8bf7a1aff399b059df1b137e0c9ed0377bc99d555ea4eb9`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	12205 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `bb7cd669949e1656cdeef1b2bf81da40fad81b402af7ccc9e798cdb8835074f5`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	5046 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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