PDF malware analysis — malicious · e9f80d33d964327e

MALICIOUS

PDF

1.95 MB

MD5: 9f3289795f2b26e799067f50c73c87ac SHA-1: c93ec1861d012ff00db4d5406c2b0c773cda5d4a SHA-256: e9f80d33d964327e687295341c0053db9600cf520eca859e56e291512c64508c

228 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. It contains embedded JavaScript and multiple secondary embedded PDFs, indicating it functions as a dropper. ClamAV detections further confirm its malicious nature, identifying it as Pdf.Dropper.Agent-7319291-0 and noting obfuscated objects within extracted artifacts.

Machine Learning

Nyx PDF Classifier malicious score 0.9987

Heuristics 6

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.Dropper.Agent-7319291-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7319291-0
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.
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.
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
`polyglot_child_pdf_off000020d0.pdf` `01e9ad97213b4600dd15d8da81a5d3cce7bd13135dbd83f156ad3a51ecda698b`	polyglot-child-pdf	Secondary PDF body inside pdf container at offset 0x20D0	2039600 bytes
Detection ClamAV: Heuristics.PDF.ObfuscatedNameObject Obfuscation or payload: likely Carved artifact contains 3 long base64-like blob(s).
`polyglot_child_pdf_off000041a0.pdf` `be8bbfa15017757725b8f12b7d55e11090584734ec02087aa67a3e70f31764d1`	polyglot-child-pdf	Secondary PDF body inside pdf container at offset 0x41A0	2031200 bytes
Detection ClamAV: Heuristics.PDF.ObfuscatedNameObject Obfuscation or payload: likely Carved artifact contains 2 long base64-like blob(s).
`polyglot_child_pdf_off00006270.pdf` `6cd33dbd87f7051ae50ad492c35def2e6d1a08160dd6f0e34b8537b9aecc6702`	polyglot-child-pdf	Secondary PDF body inside pdf container at offset 0x6270	2022800 bytes
Detection ClamAV: Heuristics.PDF.ObfuscatedNameObject Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).

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