PDF malware analysis — malicious · 47e83d58b0f1107b

MALICIOUS

PDF

37.7 KB

MD5: ff1dc1d2027508b3fc7164f6c04ec671 SHA-1: 9f18d7f2fdc50c618b71eb4d1e61a1b14577cde8 SHA-256: 47e83d58b0f1107b1605e550d2982d3c3e669260ed27b3be79640b2b4b6e077d

94 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1559.002 Component Object Model Hijacking

The PDF file exhibits multiple indicators of malicious activity, including embedded JavaScript and Flash content. The presence of `PDF_JAVASCRIPT`, `PDF_JS`, and `PDF_RICHMEDIA` heuristics strongly suggests an attempt to execute code or exploit vulnerabilities. The embedded JavaScript file `javascript_obj0006_000.js` is a primary indicator of a potential second-stage download or exploit. The `PDF_FROMCHARCODE` and `PDF_FILTER_HEX` rules further point to obfuscation and exploit techniques.

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 0xAAB	55839 bytes
`javascript_obj0006_000.js` `dd0c468ff05bb2db6cc61eb5aa8ef6039ce38a84ba2374652a49c8a773d5602d`	pdf-javascript-stream	PDF /JS object 6 at offset 0xF5	1546 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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