PDF malware analysis — malicious · a935a3c5032e2feb

MALICIOUS

PDF

267.0 KB

MD5: 47470a84c626360a088fbcc5fdd64c2c SHA-1: 9409f9626ab1386f0152395dee0586695109c8f6 SHA-256: a935a3c5032e2feb59cd9d0cfc964bf83d3338a94aeade4b9a44daf9f22ae309

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1204 User Execution

The PDF file contains embedded JavaScript and U3D content, with heuristics indicating the use of unescape functions and ASCIIHexDecode filters, strongly suggesting an exploit attempt. The presence of a U3D CVE-related indicator points to a known vulnerability in Adobe Reader's 3D parsing capabilities. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload.

Heuristics 7

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)
ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
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.
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
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_obj0015_000.js` `8ab855865d9d76fe0ae0a74b2039492241f0f82c886e002081348e27c6f68212`	pdf-javascript-stream	PDF /JS object 15 at offset 0x415DC	10948 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).
`u3d_00_off0000039e.bin` `db47f9e6c2fa22cca9aaaaba842bc1035f54c0acd3737dbd64b69dc1671da5eb`	pdf-3d-stream	PDF U3D 3D stream at offset 0x39E	1268 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.