PDF malware analysis — malicious · 293ad4950baf9f25

MALICIOUS

PDF

233.4 KB First seen: 2022-06-07

MD5: ed03a8a950025411951a09efcd2da364 SHA-1: 6c993c9e98a2e6dd7e6653831a764607dc00cb06 SHA-256: 293ad4950baf9f25ff33af94191618aab9a25e9e9ec7ab84861509348121122f

118 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains JavaScript that is configured to launch an embedded file upon opening, as indicated by the 'exportDataObject + nLaunch' heuristic. This functionality is commonly used by droppers to deliver a second-stage payload. No specific family could be identified, but the behavior is consistent with a malicious dropper.

Machine Learning

Nyx PDF Classifier malicious score 0.6119

Heuristics 6

exportDataObject + nLaunch — embedded-file launch-on-open dropper critical PDF_JS_EXPORT_LAUNCH_DROPPER

PDF JavaScript calls exportDataObject() with nLaunch set, which extracts the document's embedded file and launches it in its default application. This is a launch-on-open dropper: the embedded file is the payload. No benign workflow auto-launches an extracted PDF attachment. (matched in decompressed stream)
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
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. (matched inside decoded stream)
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. (matched inside decoded stream)
PDF paints image(s) but contains no text operators info PDF_IMAGE_ONLY_LURE

PDF has 2 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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0031.bin` `3b839ebb7296522ea171ff1b1dad86d144791aecbc41b3ecdb7ca85656cc3629`	pdf-embedded-file	PDF EmbeddedFile object 31 at offset 0x190C4	139400 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.95, consistent with packed or encrypted content.
`stream_016_off0003a191.bin` `6a541f783834828042683724ab263643028be075a88c26ca40fc88cb517e83c6`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3A191	1134 bytes

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