PDF malware analysis — malicious · 23cd7d24db175790

MALICIOUS

PDF

40.3 KB

MD5: a7946d188df5d47baf237abbe29f59a4 SHA-1: 42df7d822ab58741293bdb4d4e4f79bdbc0e45e2 SHA-256: 23cd7d24db1757901226fa0fa1c732b03c6b31aaa86fbc9ed6d1b831a1c97b09

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript and U3D content, triggering critical heuristics related to CVE-2007-5659 and ClamAV detection (Pdf.Exploit.Agent-36064). The embedded JavaScript, particularly the deobfuscated scripts legacy_pdfkit_stage_000.js and legacy_pdfkit_stage_001.js, are indicative of an exploit attempting to download and execute a second-stage payload. The presence of U3D content further suggests an attempt to leverage known vulnerabilities in PDF viewers.

Heuristics 6

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)
U3D/3D content in PDF — Adobe Reader 3D parser CVE-family indicator high CVE related PDF_U3D_CVE_RELATED

PDF contains U3D (Universal 3D) or 3D annotation content — CVE-2011-2462 and CVE-2009-3953 are critical vulnerabilities in Adobe Reader's U3D processing that allow arbitrary code execution. U3D content in PDFs is extremely rare in normal documents.
ClamAV: Pdf.Exploit.Agent-36064 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36064
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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `a5c8f0f722df4dd9876a0087e1eee65bd3020c5995f94f6729f7e17f3f3677a0`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A4	331 bytes
`legacy_pdfkit_stage_000.js` `caf0f9b1272057d071a5f912d11554cd7a1cf3ee378800d51004c09586000236`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F9	12237 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `e36d5a2c6528ecf719b4b1bbd237b6228e43f0cf66ed75a4b6d8c8e28443a25e`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F9	5127 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).
`u3d_00_off000034ae.bin` `db166b7bf539ceb527a321927dc7262838bbe91b146a4aa26884d46ee5696f20`	pdf-3d-stream	PDF U3D 3D stream at offset 0x34AE	27443 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.99, consistent with packed or encrypted content.

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