PDF malware analysis — malicious · d81dbe7f723624f8

MALICIOUS

PDF

4.1 KB

MD5: cdad1ee64a7f0a734263b48684651f3b SHA-1: 7ecfd5a2b5ff3c0882853834efeb9577648d7694 SHA-256: d81dbe7f723624f8aa1a48f1bdea3f16f6e008e05146505a523eb67dc1bef4c9

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The JavaScript stream utilizes eval() and String.fromCharCode, suggesting obfuscation to hide its malicious intent. The extracted JavaScript files, 'javascript_obj0013_001.js' and 'acroform_b64_00.js', likely contain code designed to execute malicious actions upon user interaction, such as downloading a second-stage payload or exploiting vulnerabilities. The presence of these elements strongly suggests an attack pattern aimed at leveraging JavaScript execution within the PDF.

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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_001.js` `313fbea07ac9b451b60cab7200f5ad45e930d8c91943f822b5c96affca68ad00`	pdf-javascript-stream	PDF /JS object 13 at offset 0x368	6429 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
`acroform_b64_00.js` `e0ef092ed8dac35cdf5566d7bc4f9e7d689cedb823ad9ac11e34163035d4dfda`	deobfuscated-js	PDF AcroForm base64 (decompressed) at offset 0x99D	3669 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.