PDF malware analysis — malicious · f613b39d33c2ca6c

MALICIOUS

PDF

40.2 KB

MD5: a2900dc100baab35ea99b6d1b60152a1 SHA-1: 1dc65d18c062c611026f33f1348a8948f5d7b420 SHA-256: f613b39d33c2ca6c9c0400f8f8249ed0764e1d33a4c9a80b289e7bbc28c9c445

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 User Execution: Malicious Link T1204.002 User Execution: Malicious File

This PDF file contains embedded JavaScript and U3D content, triggering critical heuristics related to CVE-2007-5659 and ClamAV detection as Pdf.Exploit.Agent-36062. The embedded JavaScript, particularly the reconstructed string from `collab.collectEmailInfo`, is indicative of an exploit attempting to gain execution. The presence of deobfuscated JavaScript files suggests a multi-stage attack designed to download and execute further payloads.

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-36062 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36062
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` `068944f8c011a88ab770b45c6de142b9305a1f515d410204d5eadd9ac2b5bfb3`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A2	373 bytes
`legacy_pdfkit_stage_000.js` `bd3f7cca0a7a96075893165df58ddfbaf5b77485e7579a5a51beb88b7915246d`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2FC	13024 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `4f39c03cbf9838cc4f2560d387019df27f4b9a84a8d50633f3158a912b5fde13`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2FC	5403 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).
`u3d_00_off00003446.bin` `48816569ab4f370009a917ef6429edbe09e4dfe8a63b00a0a0f75a904c62ba94`	pdf-3d-stream	PDF U3D 3D stream at offset 0x3446	27449 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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