PDF malware analysis — malicious · dea11d66d569d631

MALICIOUS

PDF

7.0 KB

MD5: b49c754f837f8c7da56d1e1633be20aa SHA-1: f702ca1e8e58fb6c565e8afc739c1d89af771754 SHA-256: dea11d66d569d6317df55558a335cfc7002039dfbdc0891610b8cdc32c9d8dff

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 User Execution: Malicious Link T1204.002 User Execution: Malicious File

This PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE_2007_5659 heuristic firing confirms the use of a known exploit targeting Adobe Reader's Collab.collectEmailInfo function. The PDF_UNESCAPE heuristic suggests obfuscation techniques were used to hide the malicious JavaScript. The embedded JavaScript, identified as javascript_obj0006_000.js, is likely responsible for downloading and executing a secondary payload, contributing to the overall malicious intent of the document.

Heuristics 6

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. (matched in decompressed stream)
ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `ea7b501e4c87d273095db2b28b3047e2b67de179bd7aa1d8bc27e7ac905df004`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1A3	6076 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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