PDF malware analysis — malicious · 2c364dfcdb7d569d

MALICIOUS

PDF

3.6 KB Created: 2008-31-20 53:85:00 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: d39fa409a0c6aac8646732740f2d93a9 SHA-1: df881a2e2d59ba83775af2cd1076a3c1c1824eea SHA-256: 2c364dfcdb7d569daee00c223d3a00c9cff67342881eaeffc674e022b4652514

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

This PDF document contains embedded JavaScript that is triggered by the 'OpenAction' directive. The JavaScript utilizes 'eval()' and 'String.fromCharCode()' for obfuscation, a common technique to hide malicious code. The critical 'CVE_2007_5659' heuristic indicates the use of the Collab.collectEmailInfo method, which is known to be exploitable in older PDF viewers. The script's likely intent is to download and execute a secondary payload, although the specific URL or execution method is not directly visible in the provided evidence.

Heuristics 7

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)
OpenAction trigger high PDF_OPENACTION

PDF has an /OpenAction — code runs automatically when opened
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (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.
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded stream)
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_001.js` `ff2f6435578a121cadcd1c8e7fd3ce9e8ed96655b8cb5fc980554e033736eed8`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3D7	14087 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).
`numeric_charcode_stage_000.js` `c19f83b268ee80998b43e3e863174508485d6cf7b08cc9f1a681f35be3179876`	deobfuscated-js	numeric char-code string decoded JavaScript at offset 0x445	4284 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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