PDF malware analysis — malicious · 7c2ad4a2f0fa0132

MALICIOUS

PDF

44.5 KB

MD5: 6b79fae72ee77d49545bfa932025772e SHA-1: efd6fd8205cf076cdb2de442f01ef77fc49bd8f5 SHA-256: 7c2ad4a2f0fa01322cb954b603bc86f1ce81beb8ea7c0b847b214fa16f870d19

66 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 JavaScript

The PDF file contains embedded JavaScript and U3D content, triggering heuristics related to PDF exploits and JavaScript execution. The presence of 'legacy_pdfkit_stage_000.js' and 'deobfuscated.js' suggests the JavaScript is used to download and execute a second-stage payload. The U3D content is flagged as CVE-related, indicating a likely exploit attempt.

Heuristics 5

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.
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.
syncAnnotScan annotation-staging primitive low PDF_FOXIT_SYNCANNOTSCAN

PDF JavaScript calls syncAnnotScan() — a no-op annotation-enumeration primitive used by exploit-kit JavaScript to stage payload reads from annotation /Subject fields before eval(). Not a vulnerable sink itself; rarely seen in legitimate PDFs. (matched in decompressed stream)
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_obj0009_000.js` `ba1f02105cf22032ecdc21dd278e1ea30325053c4839b3aedd4af0ed02dc9dc7`	pdf-javascript-stream	PDF /JS object 9 at offset 0x4379	450 bytes
`legacy_pdfkit_stage_000.js` `1ad981ab0a58d1c2a01f318ace1251dee02b3de29093e4333b59439120e7ecb3`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x1BB9	12337 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`deobfuscated.js` `5432ea319eb280bcbd9e5131b3cf2e2c19e40ae43e440c18f5042ce4fcd0aadb`	deobfuscated-js	PDF JavaScript deobfuscation pass	225497 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 long base64-like blob(s).
`u3d_00_off000045b7.bin` `fb27c6f6ffe2b08a88f79f344ef3cb4f85460ac81a062194b6fd84ab6e48b628`	pdf-3d-stream	PDF U3D 3D stream at offset 0x45B7	28021 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.79, consistent with packed or encrypted content.

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