PDF malware analysis — malicious · a54c67ca389c365d

MALICIOUS

PDF

12.2 KB

MD5: e20d443d1c77497f68cae142be7792a0 SHA-1: c674a7d38ea374e9415d76e0412aea2d561cfef8 SHA-256: a54c67ca389c365d946be2c201e545ad067c488f871e7797e8c58865a25a5484

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. The critical CVE_2007_5659 heuristic indicates the use of a known exploit targeting the Collab.collectEmailInfo method to execute JavaScript. This script is likely designed to download and execute a second-stage payload, as suggested by the extracted JavaScript files and the ClamAV detection of 'Pdf.Exploit.Agent-36065'. The file size and the nature of the heuristics point towards a multi-stage attack. No document body text was available for analysis.

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` `3941cbf85f7cf64e8d841713c633ca4a83b691f5292aeccf3593d3eb7fce8616`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12823 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `4815116c3996bbbe008e4963c1e17189e47b3d3dc8ef28b5b63a42852dd8f02e`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5293 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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