PDF malware analysis — malicious · 80e06a5bb7890c14

MALICIOUS

PDF

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

MD5: 061761c0f89d8e56ac5d82fe800e2964 SHA-1: 35665debc33a495574f7e6de2cf316cdad21a2e3 SHA-256: 80e06a5bb7890c14ce1f8aea37572434f1d2ef02f52b576d6ef72c56f9cf3634

278 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript and triggers an OpenAction, indicating an attempt to execute code upon opening. The presence of the CVE-2007-5659 heuristic, specifically targeting the Collab.collectEmailInfo function, confirms the exploitation of a known vulnerability. The extracted JavaScript file, javascript_obj0013_001.js, likely contains the malicious payload, although its exact function is obscured.

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-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 (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` `b246e8a84857e1a0170ac44729f7b1c1e5e292def9a75d61e30371b34688d1ee`	pdf-javascript-stream	PDF /JS object 13 at offset 0x36E	3385 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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