Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe921a0429577b28…

MALICIOUS

PDF

135.8 KB
MD5: 60d2411180fe82214dcb1623c2c08919 SHA-1: bab146a6bf43e0b28cc9997d078a09a990a96b43 SHA-256: fe921a0429577b28b113cc0a1e0ee819895180b5765c6866578b6a1a32faceac
86 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_EMBEDDED_SCRIPT_PAYLOAD. The presence of an eval() call (PDF_EVAL) suggests obfuscated or dynamically generated code execution. An embedded file, 'embedded_file_obj0016.bin', was also extracted, which is likely the secondary payload. The script's purpose is to execute this embedded payload, leading to a malicious outcome.

Heuristics 7

  • eval() call high PDF_EVAL
    eval() found — commonly used for obfuscated exploit execution
  • Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • 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.
  • 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 http://www.treebuilder.de/default.asp?file=67211.xml
    • http://www.statistics.gov.uk/populationestimates/svg_pyramid/default.htm
    • http://www.w3.org/2000/svg
    • http://www.w3.org/1999/xlink
    • http://ns.adobe.com/AdobeSVGViewerExtensions/3.0/
    • http://www.destatis.de/bevoelkerung2050

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0016.bin
0873a9e864e94f505b653f20c5a559081ac328df568c7f4514e0ec3efef2e27b		 pdf-embedded-file PDF EmbeddedFile object 16 at offset 0x65D 136935 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 22 eval/decoder/string-building token(s).
javascript_obj0010_000.js
1706e36c6f2dc4e984395b3880788bc6e7de7c0386ec284799e961f12f3ccbab		 pdf-javascript-stream PDF /JS object 10 at offset 0x391 150 bytes

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