PDF malware analysis — malicious · db60fed4e577c078

MALICIOUS

PDF

43.6 KB

MD5: b0d29c76a03d7ecf7cd2eb9f1f2f9a38 SHA-1: d506ade570d2cdc1ebfa8f43d339b54458ff4a61 SHA-256: db60fed4e577c0786035804cc51f63d92381750b3f9a46e92ee4ec6988fde520

66 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious File T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains embedded JavaScript and U3D content, with heuristics indicating a CVE-related exploit targeting Adobe Reader. The presence of multiple JavaScript files, including a large 'deobfuscated.js', suggests complex malicious scripting. The primary attack vector appears to be leveraging a U3D vulnerability to trigger the execution of this JavaScript, likely to download and execute a secondary payload.

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_obj0005_000.js` `13cad8154c205beb6306190be1155bbba6aa71c0daad170f29662965290d6f84`	pdf-javascript-stream	PDF /JS object 5 at offset 0x14F	475 bytes
`legacy_pdfkit_stage_000.js` `4ad330fa3accea8b6e87e11cf27a89c8891cb2a146f5f27f665f055336571f20`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x1CEA	12431 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`deobfuscated.js` `d3d28919e8e94e2e1f9c3fa1f8ef0a0af1ea9c66807e1883941813ef1cda40b5`	deobfuscated-js	PDF JavaScript deobfuscation pass	295307 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`u3d_00_off0000424c.bin` `fb27c6f6ffe2b08a88f79f344ef3cb4f85460ac81a062194b6fd84ab6e48b628`	pdf-3d-stream	PDF U3D 3D stream at offset 0x424C	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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