Malicious PDF — malware analysis report

Static analysis result for SHA-256 4631ce4425a2a136…

MALICIOUS

PDF

14.4 KB
MD5: 4a10a398815f5f01d4fb2ae9c096ec74 SHA-1: 7888abae4aa804ab28e9581945e5efd7d43fb8f8 SHA-256: 4631ce4425a2a136fcacd08e521709054d2f08d1ddf909d2339b716d83a33c1c
84 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with the signature 'Pdf.Exploit.Agent-36962', indicating it's a known PDF exploit. Heuristics show it contains embedded files and an AcroForm button with an action trigger, common for exploit delivery. The presence of an embedded URL further supports the attack vector. The exact nature of the exploit and payload is not detailed, but the overall pattern suggests a malicious PDF designed to compromise the user's system.

Heuristics 5

  • ClamAV: Pdf.Exploit.Agent-36962 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36962
  • 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
  • AcroForm button with action trigger low PDF_ACROFORM_BUTTON
    PDF contains a /Btn form field together with a SubmitForm/URI/Launch/JS trigger — this is the building block of fake 'Download' or 'Open' button overlays used in PDF phishing lures
  • 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.xfa.org/schema/xfa-locale-set/2.1/

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0041.bin
c06dcd026a7ea0536b63e07ce688691b585339a3ab7ff59065e546b56308c7bb		 pdf-embedded-file PDF EmbeddedFile object 41 at offset 0x2C0A 85 bytes
embedded_file_obj0042.bin
dda0835df994b8be920f715db36452f6cee7bb42bbc9c897f878a7b298ba8e91		 pdf-embedded-file PDF EmbeddedFile object 42 at offset 0x2CBC 1029 bytes
embedded_file_obj0043.bin
faa63921e590ea6bc90ca48253be80b8e3600b93abfeb0f6b1a36c7ef4849973		 pdf-embedded-file PDF EmbeddedFile object 43 at offset 0x2ED5 1796 bytes
embedded_file_obj0044.bin
3dd68f00f4fcb366a2a3a17c65cb2626eeddf5ea5713302d374310561d810169		 pdf-embedded-file PDF EmbeddedFile object 44 at offset 0x3320 144 bytes
embedded_file_obj0045.bin
10c03f88a5f0a0833dc5b2c8ac295b3a3c6f65e23889eb8cc1dc6fe29bf7f275		 pdf-embedded-file PDF EmbeddedFile object 45 at offset 0x33CC 77 bytes

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