PDF malware analysis — malicious · f06f61b007eddf0e

MALICIOUS

PDF

43.3 KB

MD5: 77260ed392279ec907b2bcbf87973335 SHA-1: 88faa2c437fed91321282ead14fbe41ffcca9fe2 SHA-256: f06f61b007eddf0ea7aa1b03ee377203d32bfb9a72e5d28d6dcdf5efdb8a19af

66 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF contains embedded JavaScript and U3D content, indicated by the PDF_JAVASCRIPT, PDF_JS, and PDF_U3D_CVE_RELATED heuristics. The presence of deobfuscated JavaScript files suggests an attempt to execute malicious code. The primary attack vector appears to be the exploitation of vulnerabilities within the PDF reader or the execution of embedded scripts, likely leading to the download and execution of a second-stage payload.

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_obj0005_000.js` `dfdfe0d7b73487c0abe14417ba9740f644a5b02fb0b80d89fe07512b78f60fa3`	pdf-javascript-stream	PDF /JS object 5 at offset 0x14F	478 bytes
`legacy_pdfkit_stage_000.js` `40fec43c87519a84fdf063c44889bac4941dd87e79023966b9d12179dac18ff9`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x1C56	12145 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`deobfuscated.js` `6fc0032fa457c693f74932d42f89d0ccd73b5fe5140813ad848bd5c17dfdee55`	deobfuscated-js	PDF JavaScript deobfuscation pass	285093 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`u3d_00_off000040fb.bin` `fb27c6f6ffe2b08a88f79f344ef3cb4f85460ac81a062194b6fd84ab6e48b628`	pdf-3d-stream	PDF U3D 3D stream at offset 0x40FB	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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