PDF malware analysis — malicious · 93db4fb6ad3f725a

MALICIOUS

PDF

1.07 MB

MD5: 98687bdcd67e62555e3c674656111b28 SHA-1: 88a8386c3bbffcf92c63a9d03e49c412c951d64e SHA-256: 93db4fb6ad3f725a064c7256d79f0edf6909c8b461e64820aad9972d2296a06e

100 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical heuristic EXTRACTED_FILE_CLAMAV fired with Html.Exploit.IFrameBOF-1, suggesting the JavaScript is used to exploit vulnerabilities or load malicious content. The presence of javascript_obj0002_000.js further confirms the use of JavaScript. The overall attack pattern is consistent with a malicious PDF designed to deliver a secondary payload, likely through the embedded script.

Heuristics 6

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.
JBIG2Decode filter medium PDF_JBIG2

JBIG2 image decoder present — historically used in zero-click exploits
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.
PDF paints image(s) but contains no text operators info PDF_IMAGE_ONLY_LURE

PDF has 1 image XObject(s) and the content stream contains no text-emitting operators (BT/ET, Tj, TJ, ', ") in either raw bytes or decompressed streams — this is the screenshot-as-PDF pattern used to bypass text-based scanners and to deliver instructions purely through rendered pixels. It is informational unless paired with invisible links or risky URI context.
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0002_000.js` `18686852235fb6adb0b5fcb92c9ff840995b248e1f64e08eb646f57d183e8b28`	pdf-javascript-stream	PDF /JS object 2 at offset 0x9C	42640 bytes
Detection ClamAV: Html.Exploit.IFrameBOF-1 Obfuscation or payload: likely Carved artifact contains 18 eval/decoder/string-building token(s).

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