PDF malware analysis — malicious · caee067c5a958d53

MALICIOUS

PDF

3.0 KB

MD5: 0f25177e69f3785c94749d14470a78b6 SHA-1: d01d062ba3d8158211a6c9f12326b53fbd20bcf4 SHA-256: caee067c5a958d5333f1d789b514558e52c1250406d089c24daf3f7c8227c17e

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious JavaScript T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains embedded JavaScript that utilizes the 'unescape()' function and targets the 'Collab.collectEmailInfo' method, indicating exploitation of CVE-2007-5659. This technique is commonly used to deliver a second-stage payload. No specific family could be identified, but the exploit vector is clear.

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.
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits
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_obj0007_000.js` `1cad44514a9611ee20da32d45bdebb6b56e3fa7439b1adae364b91e9a6ec216f`	pdf-javascript-stream	PDF /JS object 7 at offset 0x2A5	2060 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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