PDF malware analysis — malicious · 30718f9c676de06b

MALICIOUS

PDF

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

MD5: 15bb77b3a77d6e2bb3406263543588b9 SHA-1: 4e80fb6391160afafff125ef670d35ca31eb0e8a SHA-256: 30718f9c676de06ba9a3446ff0d4ea7ef0da0841f793c6eafbc5478605600f6a

278 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF file contains embedded JavaScript and is configured with an OpenAction trigger, indicating it's designed to execute code upon opening. The presence of the CVE-2007-5659 heuristic, specifically targeting the Collab.collectEmailInfo method, strongly suggests exploitation of a known PDF reader vulnerability. ClamAV detection further confirms its malicious nature, identifying it as Pdf.Exploit.Agent-34657. The embedded JavaScript likely attempts to download and execute a second-stage payload.

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. (matched in decompressed stream)
ClamAV: Pdf.Exploit.Agent-34657 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-34657
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 (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_001.js` `a557780430d2fc9b6a89015d62254870466bc7ef2f820208a33fef547d6ab9f6`	pdf-javascript-stream	PDF /JS object 13 at offset 0x35E	1707 bytes
Detection ClamAV: Pdf.Exploit.Agent-34657 Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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