PDF / .MOD malware analysis — malicious · d6f9e0a2d2281438

MALICIOUS

PDF / .MOD

3.9 KB

MD5: 2fa46fbdf1453101ed75df1e2a4820b0 SHA-1: ca378f616ed5b24d58227eb89df6b4b284814697 SHA-256: d6f9e0a2d2281438075a940b9b3835af97e9f8d28c29430cafd9cab3ece2f8f1

86 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains obfuscated JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_FROMCHARCODE. ClamAV also flagged it as Heuristics.PDF.ObfuscatedNameObject. The embedded JavaScript file, 'javascript_obj0039_000.js', is likely responsible for downloading and executing a second-stage payload. Due to the obfuscation, the exact nature of the payload could not be determined, leading to an unknown family classification and a moderate confidence score.

Heuristics 5

ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
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.
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded 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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0039_000.js` `e10cee64537ab39fd5bb10af32ccb056d7366ac9e4dac4b81e14a5c72fc9735b`	pdf-javascript-stream	PDF /JS object 39 at offset 0xCC	16096 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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