PDF malware analysis — malicious · 32125df8fa089386

MALICIOUS

PDF

12.1 KB

MD5: b3e1e9236d464e099a2dc8c1b4a64fa4 SHA-1: f97d64930639062fa04f4bce464185cea34f8d91 SHA-256: 32125df8fa089386efcee11b7b0d7e82db73d93000b67b35a1b0a7c925e1db5d

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The file is a PDF containing embedded JavaScript, which is flagged by multiple heuristics as malicious. Specifically, the CVE-2007-5659 heuristic indicates an exploit targeting the Collab.collectEmailInfo method. The presence of deobfuscated JavaScript files suggests the script is designed to download and execute further malicious content, consistent with a multi-stage attack.

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` `ec30ca450f2027ec8908f204a24a0a7994dc3e19cdaba04fede7b93a91d37146`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12321 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `94650529fcfd923d694898a73e09897808773f3a63a6effb8bbb7727f8fd80ab`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5131 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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