PDF / .COM malware analysis — malicious · 53e6f853a8606e8e

MALICIOUS

PDF / .COM

45.0 KB

MD5: 10a99fe7ba304fab3cd7ee3b4853ff55 SHA-1: a45e945ac1376d5b93bf4e600fa4f7885dc9ed8e SHA-256: 53e6f853a8606e8eed93ffca516fc0bfbcf07d27d4ad0a323116811a22bd259b

66 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 presence of deobfuscated JavaScript files suggests 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, but the exploit vector is clear.

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` `c1b5ff130aac3af62fca14faf6f47a429f61afc2e81b304b56820c851fef2fa9`	pdf-javascript-stream	PDF /JS object 9 at offset 0x4593	450 bytes
`legacy_pdfkit_stage_000.js` `257b5241df1dfa88811463536596346e1f63a3a5685e048804a05f60596ad941`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x1CAB	12842 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` `fe9a95febcd258912c643d99b409ea313660988fcc8b58502ebe1233a58ca89c`	deobfuscated-js	PDF JavaScript deobfuscation pass	229901 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 long base64-like blob(s).
`u3d_00_off000047cf.bin` `fb27c6f6ffe2b08a88f79f344ef3cb4f85460ac81a062194b6fd84ab6e48b628`	pdf-3d-stream	PDF U3D 3D stream at offset 0x47CF	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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