Malicious PDF — malware analysis report

Static analysis result for SHA-256 75208435e6b54927…

MALICIOUS

PDF

51.4 KB
MD5: c3c15034f6d7dc66ab6f59a3fe7ffe89 SHA-1: 857cc940bf1ec85b019030e3548942536a31b8e7 SHA-256: 75208435e6b54927aab4013e3dab863df503c318b92cd60a2f905cde5ad3386a
190 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document is designed as a phishing lure, presenting a screenshot of a booking invoice to entice users to click a link. The embedded JavaScript contains a PowerShell download cradle that attempts to download and execute a second-stage payload from the URL 'https://ipfs.infura.io/ipfs/QmaLrt5bY8aQeowXfjEBNSRoPCwyVPTV45NXnR6yv1g2m9#https://www.booking.com/invoice-1664809283.pdf'. The ML classifier strongly indicates maliciousness, and the combination of a visual lure with script execution points to a common attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 8

  • PowerShell download cradle in PDF action body critical PDF_PS_DOWNLOAD_CRADLE
    PDF contains a PowerShell download-and-execute cradle (IEX/Invoke-Expression of a remote payload, [Net.WebClient]/[Net.ServicePointManager], or `-ep Bypass -enc <base64>`). These strings are rare in benign PDFs and are strong evidence of payload staging in an attack chain (MITRE T1059.001 + T1105).
  • Embedded script payload in PDF stream high PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain script execution markers such as ActiveXObject/CreateObject, WScript.Shell, PowerShell, or shell-exec primitives. This is stronger than ordinary PDF JavaScript because it indicates a staged external script payload hidden in stream bytes.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 51 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • Suspicious extracted artifact medium 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.
  • 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. (matched inside decoded stream)
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://www.dynaforms.com
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • https://ipfs.infura.io/ipfs/QmaLrt5bY8aQeowXfjEBNSRoPCwyVPTV45NXnR6yv1g2m9#https://www.booking.com/invoice-1664809283.pdf
    • https://b0zoking11-27-24.blogspot.com/date.pdf\

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000c802.js
4405d46abcf0731e1a622561b9a4fa73d6864f35b4f4423bf3b62c9081f649c0		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xC802 3266 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 4 shell/COM execution token(s).

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