PDF malware analysis — malicious · 575dc0f9ee895caf

MALICIOUS

PDF

12.2 KB

MD5: 11ea537913ee085fbf8cfbb4154ceda6 SHA-1: a8b913335f63626ede7ccab1e95f6f81f95fc360 SHA-256: 575dc0f9ee895cafe8ed7b6062c903dfcc8c3ab06a96e995440044372e70aa3b

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1071.001 Web Protocols

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 the Collab.collectEmailInfo method to execute JavaScript, a known exploit technique for older PDF readers. The file was also detected by ClamAV as 'Pdf.Exploit.Agent-36062'. The presence of deobfuscated JavaScript files suggests the exploit is designed to download and execute further malicious content.

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` `081c4668b56d7cc4f0723cd1bbe4b5ce2844e96924ee88e7e30442f934ea3404`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	11932 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `99fa65139e823a6b1112c2e4fedc6d73568c6553def6d38e161d805fdb6142b7`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4889 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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