PDF malware analysis — malicious · 8a1e77487b73092e

MALICIOUS

PDF

35.2 KB

MD5: 75c649a47e1b242f23faa3c035804236 SHA-1: 9d54aafe9c3d09c3741e54e8f4ccf906f205b105 SHA-256: 8a1e77487b73092e3723e159d446ee7b92ebbdb65b4b300a141ad967b339b700

162 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.001 Spearphishing Attachment

The PDF file exhibits multiple indicators of malicious activity, including embedded JavaScript and a Flash object (Adobe.swf). The presence of JavaScript actions and streams, along with the ClamAV detection signature 'Pdf.Malware.Agent-9982958-0', strongly suggests this file is designed to execute malicious code. The embedded Flash object further increases the likelihood of exploit delivery. The extracted URLs, while some are marked benign, are part of the document's structure and could be used in conjunction with the embedded content.

Heuristics 10

ClamAV: Pdf.Malware.Agent-9982958-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Malware.Agent-9982958-0
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
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
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.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://ns.adobe.com/xdp/
- http://www.xfa.org/schema/xci/2.6/
- http://www.xfa.org/schema/xfa-template/2.6/

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`Adobe.swf` `8f9c84c8c00bc62ae296a81fac6640aa852ea67548abc1bd639aa0da1a1696c4`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0xE1F	27347 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.99, consistent with packed or encrypted content.
`javascript_obj0006_000.js` `deeb3482adc86cf2d5b3e1256e06978b5d6dc5d196d94a2d5b3391133f707cae`	pdf-javascript-stream	PDF /JS object 6 at offset 0x105	10458 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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