PDF malware analysis — malicious · a514cd86c4ab2d06

MALICIOUS

PDF

11.4 KB

MD5: dc5c0ac2ade0a27144142c0128c0e4c2 SHA-1: b55f432221a67142838ef52f8e299e6bad4089e7 SHA-256: a514cd86c4ab2d06b0a071838f460ec1ae4bec8cc00f00a1577304fb1a8f3a8b

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link 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 exploitation of a known vulnerability using JavaScript. The file was also detected by ClamAV as 'Pdf.Exploit.Agent-36065'. The presence of deobfuscated JavaScript files suggests the script's purpose is to download and execute a second-stage payload. The document body is unreadable, but the technical indicators strongly suggest an exploit delivery mechanism.

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` `0c882b7f0c085b2fb6cd48aac861e5f931eb75bbdc5006c12478f1b5166cf581`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	11664 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `024cf965efa2b21ceb14b703d1117d8b68b1561faa2c2bee5a05b6da6e094357`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	4797 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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