Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff134d35b1d76d5e…

MALICIOUS

PDF

4.1 KB
MD5: 1238490a0569800f439e41f32b4e065e SHA-1: f99f1e53d66affc4fb84b0ed582c34611860bdb3 SHA-256: ff134d35b1d76d5e7b6bbe44fa34eac42a9f75d29ef8f430297048336707bc9b
128 Risk Score

Malware Insights

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

The PDF file contains an embedded exploit targeting CVE-2010-0188 in Adobe Reader's LibTIFF component. A machine learning classifier also flagged the file as highly malicious. The embedded artifact suggests the delivery of a secondary payload, likely executed via the identified exploit.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188
    PDF contains the CVE-2010-0188 exploit template: XFA JavaScript heap-spray setup, a generated TIFF image payload, and assignment of that TIFF data to an XFA image field rawValue to trigger Adobe Reader's LibTIFF parser.
  • Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • 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_obj0008.bin
516cd0b889b5b4ff22b92d6d6bdad33a3895ad44f48e0a9c1c5a694c999c26c8
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xEA 12592 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s).