PDF malware analysis — malicious · 49c8484e47581d17

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: 04b0a851c60d914091fd1db0334e1929 SHA-1: 111a1fdd01cc491effd66c76959cd1217fa2e859 SHA-256: 49c8484e47581d17146aecdf45b5ff805c99864d2edf0a04484e4f3e85a9f259

226 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript triggered by an OpenAction, which is a common technique for exploiting PDF reader vulnerabilities. The heuristics indicate the use of eval() and String.fromCharCode, along with a specific CVE-2007-5659 exploit targeting Collab.collectEmailInfo. This suggests the script is designed to deobfuscate and execute malicious code, likely downloading a secondary payload. The file is detected by ClamAV as Pdf.Exploit.Agent-21657.

Heuristics 8

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)
ClamAV: Pdf.Exploit.Agent-21657 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-21657
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` `26fe7dcd6aceae165e9e67181ff1b9cb81be648e660677ccdd8c76a57db9b8b1`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3D7	14493 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` `baf1420bfd1a75a8eae297cd01c899d16e75d70b605f67535db124bfdbf2c3ce`	deobfuscated-js	numeric char-code string decoded JavaScript at offset 0x445	4344 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.