PDF malware analysis — malicious · f082b29346028414

MALICIOUS

PDF

49.0 KB

MD5: 2e5d942c0826115c855b46fe052ef197 SHA-1: 2146f868bd6728b55240059833b359433f9d120c SHA-256: f082b293460284145e2222b50d49954494f69b4c3c5f9f9729a08c26e7e56aed

128 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.007 JavaScript

The PDF file contains obfuscated JavaScript, indicated by multiple PDF-specific heuristics including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The ClamAV detection 'Heuristics.PDF.ObfuscatedNameObject' further supports the malicious nature. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, as suggested by the presence of eval() and String.fromCharCode functions, common in obfuscation techniques used to hide malicious code execution. The differential parser failure also points to deliberate obfuscation.

Heuristics 7

ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION

ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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.
PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED

The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PSEOF. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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_obj0005_000.js` `91a9f1a877a97bc1452879123d84f1ed74cb5020f8c921de25444152b128988e`	pdf-javascript-stream	PDF /JS object 5 at offset 0x158	49528 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`javascript_obj0005_001.js` `8840012dc9d0b0e413fb1c10b7f609db4d71af23f1335c2e10f438faade4cba3`	pdf-javascript-stream	PDF /JS object 5 at offset 0x158	69 bytes

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