Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1878e49146c9b59…

MALICIOUS

PDF

4.0 KB
MD5: 9d3651e9edd18658054d478f768838a8 SHA-1: a8684bb1ca6bb00e17a749d337e3d18512b0b5d5 SHA-256: a1878e49146c9b5986f2b773edd3e98fe50773187ca0984a34827f552f1a2e85
218 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains an embedded TIFF image that exploits CVE-2010-0188 in Adobe Reader. This vulnerability allows for arbitrary code execution when the PDF is opened. The ClamAV detection further confirms the malicious nature of the file, identifying it as Pdf.Exploit.Pidief-3.

Heuristics 7

  • Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188
    PDF contains XFA image data with an inline crafted TIFF payload and shellcode/delivery markers. This is the data-bound variant of the CVE-2010-0188 Adobe Reader LibTIFF/XFA exploit shape.
  • ClamAV: Pdf.Exploit.Pidief-3 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Pidief-3
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX
    Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
  • 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0001.bin
536af4be37338b5bdf86dcadd9d3e9328d7fca82cfc232ff2f6401125800af25
pdf-embedded-file PDF EmbeddedFile object 1 at offset 0x6C 13441 bytes
Detection
ClamAV: Pdf.Exploit.Pidief-3
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).