PDF malware analysis — malicious · 7fa28ad7dcfe6906

MALICIOUS

PDF

5.1 KB

MD5: 3f0f13581182c2c0d1e08ea17eaa2d69 SHA-1: 8ac130c6c2f3c3b7726509cd0d53468997efd058 SHA-256: 7fa28ad7dcfe690677f4e1651c191b637864343fc0ad85b846faf969dc079fe5

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 Command and Scripting Interpreter: PowerShell T1204.002 Malicious Link: Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of PDF_EVAL and PDF_FROMCHARCODE rules suggests that the JavaScript is obfuscated and uses eval() to execute code, a common technique for downloading and running secondary payloads. The extracted artifact 'javascript_obj857319_000.js' is also flagged as suspicious due to obfuscation. The overall attack pattern is a malicious PDF dropper.

Heuristics 5

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
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_obj857319_000.js` `87a67244ff95715fe789f338b2b4943ed5079cba8c0493ee64b85f8a8db49092`	pdf-javascript-stream	PDF /JS object 857319 at offset 0x134	8371 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).

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