PDF malware analysis — malicious · 54c590d7c1bc6fd3

MALICIOUS

PDF

43.9 KB

MD5: 430dba67e43f0c881f15c6a8f9f1b464 SHA-1: 1372f0ecd04d8544c2c01ab9d9f4b32a09e925dd SHA-256: 54c590d7c1bc6fd30d4c898cfa515381b937e44ef577170db4a66a61aabc16fd

66 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains embedded JavaScript and U3D content, triggering heuristics related to CVE-family exploits in Adobe Reader. The presence of deobfuscated JavaScript files suggests an attempt to execute malicious code. The primary attack vector appears to be leveraging a PDF vulnerability to run scripts, likely to download and execute further payloads.

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` `e9f55c0a19b9213d49dc39387698d3d7c5bca4396cf91a8ea09905c7509fa23a`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x1D5D	12524 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` `19863837deee3fd719b06c52cd300e8ff05fe2346fc191a630b0b836fbd1294e`	deobfuscated-js	PDF JavaScript deobfuscation pass	213796 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`u3d_00_off0000434c.bin` `fb27c6f6ffe2b08a88f79f344ef3cb4f85460ac81a062194b6fd84ab6e48b628`	pdf-3d-stream	PDF U3D 3D stream at offset 0x434C	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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