Malicious PDF / .TXT — malware analysis report

Static analysis result for SHA-256 4618a51b113de731…

MALICIOUS

PDF / .TXT

3.4 KB
MD5: e436f404df6ce87b7ae2c4004b6eaf54 SHA-1: 4b40276aeec89c1f16e88b81ca9d7bfba93fd837 SHA-256: 4618a51b113de731863132a9a859d5786a1ebaa96d8454f5d944a2b7cc4c8268
78 Risk Score

Malware Insights

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

The PDF file contains an XFA form and utilizes ASCII85Decode filters, which are indicators of malicious intent. Specifically, the heuristic firing for CVE_2010_0188 confirms that the file exploits a known vulnerability in Adobe Reader related to LibTIFF and XFA images. This exploit is designed to deliver a malicious payload, likely embedded within the decompressed stream.

Heuristics 4

  • 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.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • ASCII85Decode filter (with exploit indicators) low PDF_FILTER_85
    ASCII85 encoding filter present alongside exploit delivery indicators — uncommon outside of obfuscation
  • 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
stream_000_off000001e9.bin
94ca78eeeec1a5991a1fa53ecc49bcc0663cad58e8631a14bdde51e3570c3f9f
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1E9 13469 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).