Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e9f1d9cee4a639d…

MALICIOUS

PDF

16.2 KB Authoring application: Lyabitlgsop Pcpoowog
MD5: 00f2b71d71cd447dcc9a8c58462a0f70 SHA-1: edb0849039e41226e23b0e619c6a3a3b7cc28ccc SHA-256: 7e9f1d9cee4a639dbd27751e39434b72bd648b0abbb60a3b186b8484fc14b4bc
70 Risk Score

Malware Insights

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

The PDF contains embedded script content, flagged by heuristics as a malicious payload. The ML classifier strongly indicates maliciousness. The embedded script is likely responsible for downloading and executing a second-stage payload from the URL http://www1.strongzarmy.Kwik.To/. The embedded file artifact further supports the delivery of a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • 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://www1.strongzarmy.Kwik.To/?n5o8bh7=kpjcnJ%2FNr9ia59jSpK%2BXqqOf4qnbdZmZa6ippaWhmrOTmOHsq2aiapebaqWqpqGU0%2B2epKGqlJbRmtSlice%2FmN%2FXy7eUmOCd&quot
    • http://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xci/1.0/
    • http://www.xfa.org/schema/xfa-template/2.5/
    • http://ns.adobe.com/xtd/
    • http://www.xfa.org/schema/xfa-data/1.0/
    • http://ns.adobe.com/xfdf/
    • http://www.xfa.org/schema/xfa-form/2.8/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
8b1a1f6f9f0161bfc8e3d2a9e94045c6f8efb54ad0a1549fca7871a7d93e3338		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0x348 15500 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).

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