Malicious PDF — malware analysis report

Static analysis result for SHA-256 70199e1ccb3d666b…

MALICIOUS

PDF

4.1 KB
MD5: 0c379bd17bd4aff1b29b904622d86498 SHA-1: 153f073bce5cabb5f231de6d3cdc31c3e88df198 SHA-256: 70199e1ccb3d666bf2d2f83d7d3cd9535f5ad41bd5f36799173314c61f61a7f6
132 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF file contains an embedded exploit targeting CVE-2010-0188 in Adobe Reader's handling of XFA forms and TIFF images. This vulnerability allows for arbitrary code execution, which is typically used to download and run a secondary malicious payload. The ML classifier strongly indicates maliciousness, and the presence of an embedded exploit is a high-confidence indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • 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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PSEOF. 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.
  • 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://ns.adobe.com/xtd/
    • http://www.xfa.org/schema/xfa-form/2.8/
    • http://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xci/1.0/
    • http://www.xfa.org/schema/xfa-template/2.4/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0001.bin
f3c849448347266fd66831cb6cf48dc4e5af6e2d68cfad0009de8b71c92da140		 pdf-embedded-file PDF EmbeddedFile object 1 at offset 0x6A 12307 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).
embedded_file_obj0010.bin
8af81ed8eb133b8dbc92f16ee731a72b4418c73f308df25baea192d921e616d2		 pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x8F9 256 bytes
embedded_file_obj0011.bin
c4759e59912fba43567362ea24f9929f853ac9e92cf22ea9b3c6a720194c2b69		 pdf-embedded-file PDF EmbeddedFile object 11 at offset 0xB57 761 bytes
embedded_file_obj0012.bin
422a5430698c54d7acba092e1350d18143964b54c5496415f1d8f31cbbcf0663		 pdf-embedded-file PDF EmbeddedFile object 12 at offset 0xD60 332 bytes

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