Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a628d7b0e222bcd…

MALICIOUS

PDF

13.0 KB
MD5: 66ecf9657a97837ced65b3c38fdf37e7 SHA-1: cae81b869224321932b40a8a5ed94fa5fe5855a0 SHA-256: 7a628d7b0e222bcd6fecb9f298d2c24de001ecbd45d634973f2a6cb37dc2728e
84 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File

The PDF file contains embedded objects and an XFA form, which are common vectors for exploiting PDF vulnerabilities. ClamAV detection as 'Pdf.Exploit.Agent-36962' strongly suggests the presence of exploit code. The embedded URL, while seemingly benign, could be part of the exploit chain or a lure. The exact nature of the exploit is unclear due to the lack of script content, but the overall pattern points to a malicious PDF designed to deliver a payload.

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 0x26C4 85 bytes
embedded_file_obj0042.bin
dda0835df994b8be920f715db36452f6cee7bb42bbc9c897f878a7b298ba8e91
pdf-embedded-file PDF EmbeddedFile object 42 at offset 0x2776 1029 bytes
embedded_file_obj0043.bin
9c58a0994eee827abd1bc8adae7b02a4c6236f9577fb5360a2838db447a23842
pdf-embedded-file PDF EmbeddedFile object 43 at offset 0x298F 1789 bytes
embedded_file_obj0044.bin
3dd68f00f4fcb366a2a3a17c65cb2626eeddf5ea5713302d374310561d810169
pdf-embedded-file PDF EmbeddedFile object 44 at offset 0x2D9F 144 bytes
embedded_file_obj0045.bin
10c03f88a5f0a0833dc5b2c8ac295b3a3c6f65e23889eb8cc1dc6fe29bf7f275
pdf-embedded-file PDF EmbeddedFile object 45 at offset 0x2E4B 77 bytes