Malicious PDF — malware analysis report

Static analysis result for SHA-256 b841b9cad809c162…

MALICIOUS

PDF

5.5 KB Created: qHFdTlfA Authoring application: gfhersdd
MD5: da0fd9e86b3c8f88a347d3905c155953 SHA-1: 51ee70f42cad51c5f5fb3c985da69e9dfa1c5a29 SHA-256: b841b9cad809c16252cbed561a33e49c28ca2f2a5b81d8ee4a4a1c6d1a760b42
80 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The PDF file contains an embedded stream that triggers the CVE-2010-0188 exploit, targeting Adobe Reader. This exploit is known to be used for arbitrary code execution, typically to download and run additional malicious content. No document body text was available for analysis, but the critical heuristic firing strongly indicates exploitation.

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 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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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_002_off000002e7.bin
319664b5169f8a2eae70777b225b0f926195f1eb5135f1541bdd5bec441eaab1
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E7 59527 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).