PDF malware analysis — malicious · b5bba24b8fd36490

MALICIOUS

PDF

5.2 KB Created: 2008-08-06 01:42:27 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 3e755f4d6a9ab972f78e24abb556d9f0 SHA-1: 2299dbc833f42ee0fdd7648be1134233eddca5f0 SHA-256: b5bba24b8fd36490069fc70d2680eadb5a3007754a128a577b49aebc169be99e

278 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript and triggers an OpenAction, indicating an attempt to exploit vulnerabilities. Specifically, the 'Collab.collectEmailInfo' function is associated with CVE-2007-5659, a known PDF vulnerability. The embedded JavaScript stream, named 'javascript_obj0013_001.js', is likely responsible for executing the exploit. The file was detected by ClamAV as Pdf.Exploit.Agent-34662.

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.
ClamAV: Pdf.Exploit.Agent-34662 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-34662
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
OpenAction trigger high PDF_OPENACTION

PDF has an /OpenAction — code runs automatically when opened
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_obj0013_001.js` `9414ba368b9b5ee9291ad5aca9db9cf2015e6c378db7111ff5153eb72f84b7aa`	pdf-javascript-stream	PDF /JS object 13 at offset 0x394	3794 bytes
Detection ClamAV: Pdf.Exploit.Agent-34662 Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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