PDF malware analysis — malicious · d5f1fc8f53a8f9f1

MALICIOUS

PDF

11.6 KB

MD5: a84260e72cd3b62d393655be6053926e SHA-1: b52160a90a59bb1cd8d622422a9d3837cabba180 SHA-256: d5f1fc8f53a8f9f100b6df9af9a7eb62fc735a2b9098b552d443b54fc37d9f9a

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The critical heuristic CVE_2007_5659 indicates the PDF exploits a known vulnerability using embedded JavaScript. The presence of deobfuscated JavaScript streams (legacy_pdfkit_stage_000.js and legacy_pdfkit_stage_001.js) further supports this, suggesting the script is designed to download and execute a secondary payload. The ClamAV detection (Pdf.Exploit.Agent-36065) 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-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` `f0acab139f6370fabc860ac375fa47d80d3687a11aa397217d05415d14cc00cf`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12012 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `268770e747d3d7bcf352bc952993141e3a1ce3f932d5504fe809d7f74a4eba93`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	4987 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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