Malicious PDF / .TMP — malware analysis report

Static analysis result for SHA-256 61901e79777fd284…

MALICIOUS

PDF / .TMP

10.7 KB
MD5: 241760617b51837ca25e0301727f73c1 SHA-1: 4fed75a8d8a16dfedc8164611abbb7c924277697 SHA-256: 61901e79777fd28493bbf700f7339fcb4dc4d73ce292ffec8933672de279f238
110 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF was flagged by multiple heuristics, including ML classification and ClamAV, indicating malicious intent. The presence of an embedded file and XFA form suggests an attempt to hide or execute malicious content. While no specific script was directly extracted or readable, the embedded file is a strong indicator of a secondary payload or exploit.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
  • 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://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xci/1.0/
    • http://www.xfa.org/schema/xfa-template/2.4/
    • http://www.xfa.org/schema/xfa-data/1.0/
    • http://ns.adobe.com/xtd/
    • http://www.xfa.org/schema/xfa-form/2.8/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0001.bin
2b5241921e1de0d8f5e023ea5a5acd5b4c8ed1a3cdc785f92e5d2b19acf592c5		 pdf-embedded-file PDF EmbeddedFile object 1 at offset 0x80 13408 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).

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