PDF malware analysis — malicious · 4494d33aed4e85a5

MALICIOUS

PDF

7.2 KB

MD5: fb5e68a9618f7f6924583ed30c18d5b2 SHA-1: 704bc476a29c8f35626b3734585736b24718a051 SHA-256: 4494d33aed4e85a59b95713f2dbf8ec856230eea48ead0c8bc043b1b3ec82739

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1559.001 Component Object Model

The PDF file contains embedded JavaScript and triggers a critical vulnerability (CVE-2007-5659) related to the Collab.collectEmailInfo function. This indicates the document is designed to exploit this flaw to run arbitrary code. The presence of obfuscated JavaScript, as flagged by ClamAV and heuristic rules, further supports a malicious intent, likely to download and execute a secondary payload.

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` `056317afb4ca059ad1ea3a3df78fd1900c7d24c6a27e437435d6f19d120624bf`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1A3	6111 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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