PDF malware analysis — malicious · ed0f3b25a037190c

MALICIOUS

PDF

35.5 KB

MD5: 48801b3b6034d1b76dee7be92756a691 SHA-1: d47958a762d6b64e43f3a64c8c12fc68ead58693 SHA-256: ed0f3b25a037190c3e3ad05b5f1a16b9b503abda4d3ab9d0a37cbde8d809041b

68 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The PDF_U3D_CVE_RELATED heuristic suggests exploitation of a known Adobe Reader vulnerability. The deobfuscated.js artifact was extracted, implying the script's primary function is to download and execute a second-stage payload. The exact nature of the payload is not discernible from the provided evidence.

Heuristics 6

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)
PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED

The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PSEOF. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0009_000.js` `fc5b426b863fda3995fccd3f522ce82f4a2e780f06c61c18c1f9c560eb55c984`	pdf-javascript-stream	PDF /JS object 9 at offset 0x364C	493 bytes
`deobfuscated.js` `6554a7172f3a2c12b279cc034682a426c758e28c362576497f8baa00828c088a`	deobfuscated-js	PDF JavaScript deobfuscation pass	38359 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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