PDF malware analysis — malicious · 407da717b5f085bb

MALICIOUS

PDF

3.1 KB Created: 2007-12-28 01:47:41 -05:00 Authoring application: iText 2.0.7 (by lowagie.com)

MD5: 3b90349c9ccf2d336d5c0380a87aea51 SHA-1: 21b00f629b13b5eaa52fc5030ecc50a4875a7ad9 SHA-256: 407da717b5f085bbf8a3a0b4104acd3c69258ca05b7b99fc9c1ca76ab9bceb98

276 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that utilizes the 'unescape()' function and targets the 'Collab.collectEmailInfo' method, indicating exploitation of CVE-2007-5659. ClamAV signatures confirm this as a malicious PDF exploit. The embedded JavaScript is the primary mechanism for delivering the malicious payload.

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. (matched in decompressed stream)
ClamAV: Pdf.Exploit.Agent-34407 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-34407
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.
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
Suspicious extracted artifact high 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.
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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0001_000.js` `ba850506123bdea100fe7afe2d744ea436b689528242ef82679c4b8e3d91bc58`	pdf-javascript-stream	PDF /JS object 1 at offset 0xF	4969 bytes
Detection ClamAV: Pdf.Exploit.Agent-34407 Obfuscation or payload: likely Carved artifact contains 20 eval/decoder/string-building token(s).

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