Malicious PDF — malware analysis report

Static analysis result for SHA-256 2df7bfd7b4ebcb15…

MALICIOUS

PDF

13.1 KB
MD5: 34575e3501edb3ce84d2ecad42a6ec58 SHA-1: aae85d38abb695c4ecf920437da13529d981c36d SHA-256: 2df7bfd7b4ebcb1545dea3c62fa12b16b9d01508a9030b27ebf31eef51837748
114 Risk Score

Malware Insights

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

The file is a PDF document flagged by multiple heuristics and a machine learning classifier as malicious. It contains an embedded file and an XFA form, which are common vectors for PDF exploits. ClamAV detection confirms it as Pdf.Exploit.Agent-36962, indicating it likely exploits a known vulnerability to download and execute a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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 0x26C1 85 bytes
embedded_file_obj0042.bin
dda0835df994b8be920f715db36452f6cee7bb42bbc9c897f878a7b298ba8e91		 pdf-embedded-file PDF EmbeddedFile object 42 at offset 0x2773 1029 bytes
embedded_file_obj0043.bin
e7851af5e081c5f5c213de29bdc9f7a06a2e391a781bf5a9853e28c7c369149e		 pdf-embedded-file PDF EmbeddedFile object 43 at offset 0x298C 1735 bytes
embedded_file_obj0044.bin
3dd68f00f4fcb366a2a3a17c65cb2626eeddf5ea5713302d374310561d810169		 pdf-embedded-file PDF EmbeddedFile object 44 at offset 0x2D78 144 bytes
embedded_file_obj0045.bin
10c03f88a5f0a0833dc5b2c8ac295b3a3c6f65e23889eb8cc1dc6fe29bf7f275		 pdf-embedded-file PDF EmbeddedFile object 45 at offset 0x2E24 77 bytes

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