PDF malware analysis — malicious · 54e134cfdf68d1a7

MALICIOUS

PDF

12.7 KB

MD5: d62b4fdb55e68489ff3204ab4fc801ca SHA-1: e0b201dbbcbeda21ab9feae16771c25c2bb3a83c SHA-256: 54e134cfdf68d1a72e3ef0c3d6098bac09a8206493d374a3656b7795dc7dc2cf

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, identified by the PDF_JAVASCRIPT and PDF_JS heuristics. Specifically, the CVE-2007-5659 heuristic indicates the exploitation of a known vulnerability using JavaScript that is constructed by concatenating specific PDF info fields. The presence of deobfuscated JavaScript files ('legacy_pdfkit_stage_000.js', 'legacy_pdfkit_stage_001.js') suggests a multi-stage attack. The ClamAV detection further confirms its malicious nature. The overall pattern points to a PDF-based exploit 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` `4e8ca5b2ba5d602d505cca60b359e5ddd255ac743fa68b60a1c3876c2377aab1`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12315 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `2cf59dbebebeedc1546885f6ec54cde681a0f2da29839a9001e13b141c0522f9`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5088 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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