PDF malware analysis — malicious · 4e82ddfde78324d3

MALICIOUS

PDF

12.7 KB

MD5: 2c6eee4d6df62b9ba2cd34642a94ff92 SHA-1: ec7c24b35e6bdd842d2d1f48a2d41d9555d8e987 SHA-256: 4e82ddfde78324d369bb43936e8d3db5043966ca8c1dad82fa614555a9ae27b0

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript, specifically triggering the CVE-2007-5659 vulnerability via the Collab.collectEmailInfo method. This indicates an attempt to exploit a known PDF reader flaw. The presence of deobfuscated JavaScript files suggests the execution of malicious code, likely to download and execute a second-stage payload. The file is detected by ClamAV as Pdf.Exploit.Agent-36062.

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-36062 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36062
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` `068944f8c011a88ab770b45c6de142b9305a1f515d410204d5eadd9ac2b5bfb3`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19B	373 bytes
`legacy_pdfkit_stage_000.js` `c55e26383237469018e64e48d2f7b67c8e986755f940a11608c906999622daaa`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12452 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `6e616927e6bcbc11314c17568bc5952c3f418ce15aa2f2b2e369020fe7c17262`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5158 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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