PDF malware analysis — malicious · e670bf897ed66106

MALICIOUS

PDF

12.6 KB

MD5: 1882b40954aec6b16773a6eb33f874e4 SHA-1: 1c2d82daf997d789f5847217b715f6a8f3f21548 SHA-256: e670bf897ed661062c2dddfcc597448a7779f34f05862e7a8ad5f3c16da9187a

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link T1204.002 Malicious File

The file is a PDF containing embedded JavaScript, identified as malicious by ClamAV (Pdf.Exploit.Agent-36062). Heuristics indicate exploitation of CVE-2007-5659 via JavaScript actions and embedded JS streams. The extracted JavaScript files (legacy_pdfkit_stage_000.js, legacy_pdfkit_stage_001.js) suggest a multi-stage download and execution process, typical of a PDF-based exploit kit.

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` `05499b4aa7b78014e983f2ae76272c5242b570cfec79c34f45d2c38baba6eebd`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12295 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `8465ae8a847d3836a71a4e7d122e28c8112f9ffe32c8711eaf63c4b9d8296a3e`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5104 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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