PDF malware analysis — malicious · e5c28026a1f5cffd

MALICIOUS

PDF

2.6 KB Created: 2008-07-26 19:43:58 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: fda9fd0945cf99a1e770a10a1147969e SHA-1: 21a6202648f82291c7a0cb97e9a284130730ce6c SHA-256: e5c28026a1f5cffd29ee2aac9198532d9af8588d463d3cd544c3776f8c8101a6

118 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious Link: Malicious File

The PDF file contains embedded JavaScript that utilizes the Collab.collectEmailInfo function, which is a known vulnerability (CVE-2007-5659). This indicates the document is designed to exploit this vulnerability, likely to gather email addresses or potentially deliver a secondary payload. The presence of JavaScript actions and streams, along with the specific CVE firing, strongly suggests this attack vector. No specific family could be identified.

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. (matched in decompressed stream)
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_obj0013_000.js` `cd5f8e21a56a1b13d60484ee185ffeced4aba8e3934fbd61f25130adc60190c8`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3CE	2082 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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