PDF malware analysis — malicious · e318d63352175d4f

MALICIOUS

PDF

11.8 KB

MD5: ac01426ca3f164f51dd1127cd759b09c SHA-1: 28ff3095ce469bdd140c8f3ada0e0f84f1165402 SHA-256: e318d63352175d4fbc3655b3e28c312fa44a90c3183fab6a84a84cac29d042b1

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT' and 'PDF_JS'. The critical 'CVE_2007_5659' heuristic specifically points to the use of 'Collab.collectEmailInfo' to execute JavaScript, which is a known method for exploiting PDF vulnerabilities. The file was detected by ClamAV as 'Pdf.Exploit.Agent-36065', further confirming its malicious nature. The extracted JavaScript files suggest a multi-stage approach, common in exploit kits.

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` `ee84f81209677a65d7c688bf6e069cd39fd36a76dfd5972b34115affe52968dd`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12106 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `d9b23c2201b5d23f1435aaf74ca750afeb10c0ed1ab6b9861edb90d6508fc4db`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	4976 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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