PDF malware analysis — malicious · 368e678cf9fb3a59

MALICIOUS

PDF

497.0 KB

MD5: 9303ce16508dead5ab88c9e55fc80710 SHA-1: 08daf50c331d926397d154c4977393b939cbc415 SHA-256: 368e678cf9fb3a590a72317633c65228eb3e53d24769615c53f52a02a620bb1c

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript and triggers a critical heuristic related to CVE-2007-5659, indicating an exploit attempt. The ClamAV detection of 'Pdf.Dropper.Agent-6309414-0' further confirms its malicious nature. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, though its exact functionality is obscured.

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.Dropper.Agent-6309414-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-6309414-0
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 7

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0229_000.js` `1847af0a099665b6ac45af66402e56ed64237a1b287618ee3d6643267fda6f35`	pdf-javascript-stream	PDF /JS object 229 at offset 0x7B078	343 bytes
`legacy_pdfkit_stage_000.js` `775c1620ac5bc923d43acc9f0d0e4afcb725a689cf6034f662f1852c29df003a`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x6EA3	12928 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `33b39a8806a25dad689fff30c5caa714c3d8028633487970a1b0f2ef4c949c3a`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x6EA3	5337 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).
`font_00_sfnt_off0000bb5a.bin` `80383e85181b7288bd3f68d71356b7e2ef2e1f0ba00d93e81908469c104a18d9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBB5A	52108 bytes
`font_01_sfnt_off00014242.bin` `336a7a084a76c025a84d5a8cbd6080db9a267cde0e24fe672acabed56b19aa8d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14242	48764 bytes
`font_02_sfnt_off0001daa9.bin` `2722878b19761e7a433e1ca6f32e7f9fe9cccce4136877b3beb9040f23bd4b18`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1DAA9	23432 bytes
`u3d_00_off00000326.bin` `48816569ab4f370009a917ef6429edbe09e4dfe8a63b00a0a0f75a904c62ba94`	pdf-3d-stream	PDF U3D 3D stream at offset 0x326	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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