PDF malware analysis — malicious · fce6579a6064cb2b

MALICIOUS

PDF

58.1 KB Created: 2010-03-06 03:18:45 Authoring application: yTXoZYoiLW6Y (via QNZbxSIDCRVW)

MD5: 1c847429b7fa8654a7c2a31d9c71eb01 SHA-1: 08f31ab8ec736de6ab897ed45d6006e51202a714 SHA-256: fce6579a6064cb2b6356ce3fa46a8faa05302271be1ea5615002daf98ae58a50

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and a high-confidence PDF_EVAL call. The JavaScript stream, named 'javascript_obj0007_000.js', is obfuscated and likely responsible for downloading and executing a second-stage payload. The presence of String.fromCharCode and eval() calls strongly suggests code obfuscation to hide malicious activity.

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.
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_obj0007_000.js` `e60671f0b14750218f34bd6c5ed87aeb7ee7ae4e3ca468c7050029c5911d7e35`	pdf-javascript-stream	PDF /JS object 7 at offset 0x23B	58239 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.