PDF malware analysis — malicious · 8c9a366593a4cced

MALICIOUS

PDF

2.42 MB

MD5: 2756a4e992855ab08fde6511922fb7c9 SHA-1: 2fd0fc64d7ae2362e069f64b1603fe169f89647b SHA-256: 8c9a366593a4cced76d1c131698803f60bb7420339492bc81d04cb740b45f884

286 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1566.001 Spearphishing Attachment T1204 User Execution

The PDF file contains embedded JavaScript and a secondary embedded PDF, both of which triggered critical heuristic alerts for exploit activity. The embedded JavaScript, specifically the eval() call, is highly suspicious and likely responsible for executing malicious code. The ClamAV detection of 'Pdf.Exploit.Agent-35955' further confirms the malicious nature of the file. The primary function appears to be exploiting PDF vulnerabilities to deliver and execute further stages of malware.

Heuristics 9

Secondary embedded PDF body has suspicious static findings critical POLYGLOT_CHILD_PDF_STATIC_TRIAGE

A valid PDF body was found at a nonzero offset inside another container and its carved contents matched PDF exploit or lure heuristics. This catches polyglots where the top-level magic routes to ZIP/OLE while a PDF reader or downstream parser opens the hidden PDF payload.
ClamAV: Pdf.Exploit.Agent-35955 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35955
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
RichMedia (Flash) high PDF_RICHMEDIA

PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector
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.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0016.bin` `ed760d4a2122e1bb79bf8530611e0b77f9d9223820e99fa56ae8c201f44862bc`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0x146D	26774 bytes
Detection ClamAV: Pdf.Exploit.Agent-35955 Obfuscation or payload: likely Carved artifact entropy is 7.99, consistent with packed or encrypted content.
`javascript_obj0006_000.js` `ce44f38eb0f616818628376bcec99247a88e161a69539f804a0484c5f0b1d586`	pdf-javascript-stream	PDF /JS object 6 at offset 0x13C	12116 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 10 eval/decoder/string-building token(s). Carved artifact contains 3 long base64-like blob(s).
`polyglot_child_pdf_off00262db6.pdf` `0f19ad8448c338b0c3e3a06c4476f0c3cd7e3195f52ddccef3899f2956be83ce`	polyglot-child-pdf	Secondary PDF body inside pdf container at offset 0x262DB6	37419 bytes
Detection ClamAV: Pdf.Exploit.Agent-35955 Obfuscation or payload: unlikely

Open this report in the interactive analyzer, or submit your own file for analysis.