PDF malware analysis — malicious · 484c0fcf500aea99

MALICIOUS

PDF

11.6 KB

MD5: e78b787619d8f3839752482009598616 SHA-1: 54b14b32a05152a6726075c918026e3b1f98afa4 SHA-256: 484c0fcf500aea9937798d4e54c3e5ad0153b6025707a384357ccc1ed8fd72ea

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

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' JavaScript function, which is known to be used in exploits. This function is likely used to download and execute a second-stage payload. The presence of deobfuscated JavaScript files further supports this. The overall attack pattern is consistent with a PDF exploit delivering a malicious payload.

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` `1f0d02a681f340f0e12a772f193fcf33b37b0612ecee606447abda21439f6012`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	11928 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `fe341b113de75ea90fe724f7fcc377576701611453ce3b85e12c27d8cd262b1f`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	4941 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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