PDF malware analysis — malicious · 463e6b5b9ea37757

MALICIOUS

PDF

12.6 KB

MD5: e819158ff974926ba97a28dc12ed5884 SHA-1: 3221310aa762eb2b5093ffa050bb80c0f61a0dd6 SHA-256: 463e6b5b9ea377577f8671f5204b89c79aca5533aa8fb22b5c11aa8f7dcd74ff

138 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript that exploits the CVE-2007-5659 vulnerability using the Collab.collectEmailInfo method. This vulnerability allows for arbitrary JavaScript execution, indicating the file's primary purpose is to deliver a malicious payload. The presence of deobfuscated JavaScript streams further supports this finding.

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` `072229ef0e5ccaf26cb692960a124722b955b82c9dccfc97a3755609f45241d8`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12259 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `f4537d8542c272473bfe2d9682c464a7ca0cc1d25e4d9ecf4fa563ddf7cb132f`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5056 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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