PDF / .S00 malware analysis — malicious · d578f8c5e7d477d2

MALICIOUS

PDF / .S00

45.8 KB

MD5: bdd047b47fd00fa400b6a21de48c0104 SHA-1: aff45935d28d666094b0f7e285d7747dc969bab7 SHA-256: d578f8c5e7d477d2fc9f70f1a56980ae65b8aae27a87724502778fc9eaae8e64

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1566.002 Spearphishing Attachment

The PDF contains embedded JavaScript and U3D content, indicated by the PDF_JAVASCRIPT, PDF_JS, and PDF_U3D_CVE_RELATED heuristics. The JavaScript stream was found to be deobfuscated and contains calls to unescape(), suggesting it's designed to decode and execute malicious code. The U3D content is also flagged as CVE-related, pointing to exploitability. The primary function appears to be downloading and executing a second-stage payload, as evidenced by the deobfuscated JavaScript.

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.
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` `5390dbdaf0e0bdf0ce5e50e4abc04e9d78eba1f277cec36a1d554b89ac6b1d04`	pdf-javascript-stream	PDF /JS object 9 at offset 0x48C2	442 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `1815fb528e50b460d65ab8a211711db9f49abf89b78021a645c5b9d20e336e90`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x1D6B	13110 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_off00004af5.bin` `a96e1fca2499edf504d3934052ca1fc338d4b4898a65e6a361937ed1ba0dc0fe`	pdf-3d-stream	PDF U3D 3D stream at offset 0x4AF5	28021 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.79, consistent with packed or encrypted content.

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