PDF malware analysis — malicious · 39272aeb8b28d1c6

MALICIOUS

PDF

45.7 KB

MD5: cce3748a05d398a9f1c77ccee9b8e005 SHA-1: ba3b76e08dbbe35d64613a38226bcced9e6d27eb SHA-256: 39272aeb8b28d1c6929b2a29807eab8ddcc2ca722bc708e5ad36dd1953f1c739

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains embedded JavaScript and U3D content, with heuristics indicating a potential exploit related to Adobe Reader 3D parsing vulnerabilities. The extracted artifact 'deobfuscated.js' likely contains malicious code intended to download and execute a second-stage payload. The presence of JavaScript actions and embedded JS streams strongly suggests an attempt to leverage these features for exploitation.

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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0009_000.js` `6808e4129c47477626bc3ab8c575d90a9d666412eb6956c646d1673e25a01b18`	pdf-javascript-stream	PDF /JS object 9 at offset 0x47EE	573 bytes
`deobfuscated.js` `240f5d9971329098ef2b33475532bd6d4d5626fa201fb8c063c33eb6d4c33d1b`	deobfuscated-js	PDF JavaScript deobfuscation pass	248209 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 long base64-like blob(s).
`u3d_00_off00004a59.bin` `a96e1fca2499edf504d3934052ca1fc338d4b4898a65e6a361937ed1ba0dc0fe`	pdf-3d-stream	PDF U3D 3D stream at offset 0x4A59	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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