PDF malware analysis — malicious · dd9ac76739379963

MALICIOUS

PDF

12.5 KB

MD5: fafb6769779d16a38dedd8aa84034277 SHA-1: 9f43056ddefae920655ca5529eb18184b189aa8b SHA-256: dd9ac767393799631880ec6d66f21200bc6b3830d972a4f25ec56d7d68da4a3f

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript, identified by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE_2007_5659 heuristic indicates a known exploit targeting Adobe Reader, which likely uses the embedded JavaScript. The extracted artifacts legacy_pdfkit_stage_000.js and legacy_pdfkit_stage_001.js suggest the JavaScript is used to download and execute further stages. The ClamAV detection further confirms its malicious nature.

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` `3260ccf31eceb53d80b93f9de4b848bcee54ce24683b1207d7d31b97481970c1`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12192 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `8ecf3fe1d1596d55013e5e2e095b32dbb1c22cbf7240c454ecd33dfa12cab1b1`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5027 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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