PDF malware analysis — malicious · 354dd0f7259efb59

MALICIOUS

PDF

45.0 KB

MD5: 2ad2db927ef0fb86c04ba1870cbf229e SHA-1: 63c4f33aee4bb21d697000699d968283a47fc746 SHA-256: 354dd0f7259efb5944fa4f58f0b8567801f1828ec64a86514c00dadeb104082d

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript and 3D content, indicated by the PDF_JAVASCRIPT, PDF_JS, and PDF_U3D_CVE_RELATED heuristics. The presence of deobfuscated JavaScript files suggests the script is designed to download and execute a second-stage payload. The PDF_FOXIT_SYNCANNOTSCAN heuristic further points to the use of annotation staging primitives for payload delivery. Due to the obfuscated nature of the scripts and the lack of specific IOCs like URLs or hashes, the family remains unknown.

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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0009_000.js` `e2b34b75dcc0469a6f14d95a84adeee8b269034ea24b4719ad2ffc87470b98c8`	pdf-javascript-stream	PDF /JS object 9 at offset 0x4563	590 bytes
`legacy_pdfkit_stage_000.js` `149787851a3b934ac0cd30c52fca25479d00f27b890197bf8394bc7a7f710a95`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x1B49	11715 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).
`deobfuscated.js` `c7b71de5241db2406e0cfb069a3c959c799ba01588262738f3587572292d96c6`	deobfuscated-js	PDF JavaScript deobfuscation pass	339792 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 long base64-like blob(s).
`u3d_00_off000047d2.bin` `9ee983707edc4351a88e510e1ea40257b620aa8d1703a4e6b0401cfab3608352`	pdf-3d-stream	PDF U3D 3D stream at offset 0x47D2	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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