PDF malware analysis — malicious · c416f34a80e6be57

MALICIOUS

PDF

81.7 KB

MD5: 406f873fe7cca6cbc22a1a9d2b6cc931 SHA-1: 339fac30a8240334e43ff3a578510d15782276d2 SHA-256: c416f34a80e6be577e0e3c209d071015c60a8dae9125fccf1279a48ff5caf151

172 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1059.001 Command and Scripting Interpreter: PowerShell

This PDF file contains embedded JavaScript and is flagged as a dropper by ClamAV. The embedded JavaScript is likely used to download and execute a secondary payload, as indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The PDF_EMBEDDED_CHILD_STATIC_TRIAGE heuristic further suggests that an embedded PDF child object contains suspicious findings, including JavaScript, XFA forms, and exploit indicators. The overall behavior points to a malicious dropper designed to compromise the user's system.

Heuristics 7

Embedded PDF child has suspicious static findings critical PDF_EMBEDDED_CHILD_STATIC_TRIAGE

PDF contains an embedded PDF stream whose extracted child matches suspicious or malicious PDF heuristics. Wrapper PDFs are commonly used to hide the actual exploit or lure payload from scanners that do not recursively inspect attachments.
ClamAV: Pdf.Dropper.Agent-1506703 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-1506703
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

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0012_000.js` `c101c1ffa39455813e54581a2a827f42cf9088adb4109c9162045e030aecfba9`	pdf-javascript-stream	PDF /JS object 12 at offset 0x132C0	3144 bytes
`msf.pdf` `f63abc0cb6ba7851a15a5ab2cf846af27f961413fbff57cfac622bec69458e6d`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0x3A2	82906 bytes
`javascript_obj0009_000.js` `d34469e19a1a64397bfd3c97f146a8aca8c2e06509fc8ac323640cceb1b714e3`	pdf-javascript-stream	PDF /JS object 9 at offset 0x14510	56 bytes
`javascript_obj0009_001.js` `2bb1e7a202c327335e98a6e43785bbd246ca7796ccc763fad48de6300cba11eb`	pdf-javascript-stream	PDF /JS object 9 at offset 0x14510	54 bytes

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