PDF malware analysis — malicious · b8a6e63319a32bc7

MALICIOUS

PDF

2.1 KB

MD5: 2daeed45e04b4c1ab44b6e8ab231bffb SHA-1: cf5e5982a63b285a1f7b74a83ffdd31ff27b0ab9 SHA-256: b8a6e63319a32bc7bdb8d3aa8b879f19cc0dadd25bc9a2f387f0f94bfeeab89d

78 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution: Malicious File T1027 Obfuscated Files or Information: Obfuscated Files or Information

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings related to PDF JavaScript and unescape calls. The JavaScript stream, named 'javascript_obj0006_000.js', is likely responsible for downloading and executing a second-stage payload. The use of ASCIIHexDecode filter with exploit indicators further suggests malicious intent.

Heuristics 5

unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
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.
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `a774ea77d4330a7a56a4b39fa84b52cc52c36337b98d9073b2d2f5e35ee46fd7`	pdf-javascript-stream	PDF /JS object 6 at offset 0x12D	424 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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