PDF malware analysis — malicious · 488c644c4ad428a2

MALICIOUS

PDF

9.8 KB

MD5: 573cce4c69cd8929bc053533898de070 SHA-1: e7d7ad775a589199a3749bbb2d9ac989598898eb SHA-256: 488c644c4ad428a2c8fa20ad990eac958f1f6661f51aa9f0857d42de5a60d39c

98 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript and U3D content, with heuristics indicating a potential exploit related to Adobe Reader's 3D parsing capabilities (CVE-family). The embedded JavaScript stream, particularly 'javascript_obj0010_001.js', is likely responsible for the malicious activity. While the exact script functionality is not fully detailed, the presence of unescape() calls and the U3D exploit indicator strongly suggest it's designed to download and execute a second-stage payload.

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.
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.

URL http://twitter.com/feliam

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0005_000.js` `90c70853178b4dfbe5aeb450bc9c83613bf38a945de76ebe1faf0f9fd5312150`	pdf-javascript-stream	PDF /JS object 5 at offset 0x178	62 bytes
`javascript_obj0010_001.js` `542f606c806caf41a1dfe5b7616415b59a11c39961c8bdb57b7fbfcf2b1aaf20`	pdf-javascript-stream	PDF /JS object 10 at offset 0x59E	3855 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 6 eval/decoder/string-building token(s).
`u3d_00_off0000025c.bin` `f79e8522f672a31bcecc42ffcffba793e3187ecca4888cf754a1d82c3d5516a5`	pdf-3d-stream	PDF U3D 3D stream at offset 0x25C	393 bytes

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