PDF malware analysis — malicious · 7efd4a450494da2f

MALICIOUS

PDF

37.7 KB

MD5: fe8b36d4f8c76e5cff06b41b7fa06157 SHA-1: 4b5ce205e3121e272285ff46cb037d0e3425951d SHA-256: 7efd4a450494da2fee80f88ebe15846972eb0dcbb1a9bf18f7af78a66ec7d5a7

94 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1559.002 Component Object Model Hijacking

The PDF file contains embedded JavaScript and RichMedia (Flash) content, indicated by the PDF_JAVASCRIPT, PDF_JS, and PDF_RICHMEDIA heuristics. The presence of a JavaScript stream and an embedded file suggests the document is intended to execute malicious code or download further payloads. The JavaScript stream, named 'javascript_obj0006_000.js', is a primary indicator of malicious activity. The use of ASCIIHexDecode filter with exploit indicators further supports this. The exact intent of the script is obscured, but its presence in a malicious PDF points towards a delivery mechanism for malware.

Heuristics 7

RichMedia (Flash) high PDF_RICHMEDIA

PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector
ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
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.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
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
`embedded_file_obj0016.bin` `ce5f7936cf8e3536a88a804ce2d6902022df1794fa878bdc64a26866e34ba989`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0xAAF	55839 bytes
`javascript_obj0006_000.js` `7d037252b7b992d95d5b88bd55ae78b1952b91b86f77765ec44d4ea2659d1585`	pdf-javascript-stream	PDF /JS object 6 at offset 0xF5	1540 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.