MALICIOUS
208
Risk Score
Malware Insights
MITRE ATT&CK
T1203 Exploitation for Client Execution
T1059.007 JavaScript
T1566.001 Spearphishing Attachment
The PDF file contains embedded JavaScript that triggers an exploit for CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. This exploit is designed to execute arbitrary code, and the presence of embedded files suggests a downloader or dropper functionality. The primary attack vector is likely spearphishing attachment, with the PDF acting as the initial lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9952
Heuristics 10
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Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188PDF 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.
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PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTERPDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
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Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOADPDF 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.
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Embedded file low PDF_EMBEDDEDPDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
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XFA form low PDF_XFAPDF uses XML Forms Architecture — can contain script logic
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JavaScript action low PDF_JAVASCRIPTPDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules. (matched inside decoded stream)
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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules. (matched inside decoded stream)
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGEOne 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.
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Embedded URL info EMBEDDED_URLOne 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://ocsp.verisign.com0
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xfa/promoted-desc/
- http://ns.adobe.com/xdp/
- http://www.xfa.org/schema/xci/1.0/
- http://www.xfa.org/schema/xci/2.8/
- http://www.xfa.org/schema/xfa-template/2.5/
- http://www.xfa.org/schema/xfa-locale-set/2.1/
- http://ns.adobe.com/xtd/
- http://www.xfa.org/schema/xfa-data/1.0/
- http://ns.adobe.com/xfdf/
- http://www.xfa.org/schema/xfa-form/2.8/
- http://cgi.adobe.com/special/acrobat/update
- http://crl.verisign.com/tss-ca.crl0
- http://crl.verisign.com/ThawteTimestampingCA.crl0
- https://www.verisign.com/rpa
- https://www.verisign.com/rpa01
- http://crl.verisign.com/pca3.crl0
- http://CSC3-2004-crl.verisign.com/CSC3-2004.crl0D
- https://www.verisign.com/rpa0
- http://CSC3-2004-aia.verisign.com/CSC3-2004-aia.cer0
- http://www.adobe.com/typehttp://www.adobe.com/type/legal.html
Extracted artifacts 14
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
embedded_file_obj0001.bin04b8af10e5b228b5612c950abc133b1a5b6b60eb00e4ff25a64afb363a85a768 |
pdf-embedded-file | PDF EmbeddedFile object 1 at offset 0xE62FD | 163 bytes |
embedded_file_obj0002.bine7b050b4d5f9b000166db6c39fc3cec28e0f559d74566f01b618f030ad2f2e27 |
pdf-embedded-file | PDF EmbeddedFile object 2 at offset 0xE63ED | 1587 bytes |
embedded_file_obj0003.binaffe261c3500eacffd2adc8024f5e26b3b729a11069254b580ba2177ffbe0980 |
pdf-embedded-file | PDF EmbeddedFile object 3 at offset 0xE66E3 | 25015 bytes |
|
Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact contains 2 long base64-like blob(s).
|
|||
embedded_file_obj0004.bin560dcced2df6f65386a395771a4721a00980be4d89cc752639746882322da5c3 |
pdf-embedded-file | PDF EmbeddedFile object 4 at offset 0xEAB7D | 2518 bytes |
embedded_file_obj0005.bin500856001a9edb17a299f41c8b34871c12c85d56ec8eff03ef181fca24bb96b5 |
pdf-embedded-file | PDF EmbeddedFile object 5 at offset 0xEAE79 | 200 bytes |
embedded_file_obj0006.bin863537ccdffd88224d5b70221bc496b5600aa8beb0feda26a0ac48081644ac35 |
pdf-embedded-file | PDF EmbeddedFile object 6 at offset 0xEAF6D | 237 bytes |
embedded_file_obj0007.bin385ee16f9e56270fc4cd495ba71f508ac4f3a53b1bbd78bc1f8ca79af5d84793 |
pdf-embedded-file | PDF EmbeddedFile object 7 at offset 0xEB083 | 1533 bytes |
embedded_file_obj0008.bin2ebdd7efeaa1190ff6bad8cbd649b313e3969564018f204e7385b97c2fab1e19 |
pdf-embedded-file | PDF EmbeddedFile object 8 at offset 0xEB340 | 80 bytes |
embedded_file_obj0009.bin4a60a9864cdf7382475d51051a03fdc43b32c31eb508893ccfccece34957f9f1 |
pdf-embedded-file | PDF EmbeddedFile object 9 at offset 0xEB3E9 | 56 bytes |
stream_002_off00000374.jsf8721569904600df33f536ddc9f4942717077f9d6c3c4253a8f4de5650fc6531 |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x374 | 1367 bytes |
stream_003_off0000055a.js91ea259764c68d27b8981a339c02d8ea92224ae5c0d0cd0a7c8f3d645d599090 |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x55A | 902 bytes |
stream_009_off000e5cc5.bin785103e079820125430834c8a2f896d512a2c16ee7d224705b6b607f90fec865 |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0xE5CC5 | 1278 bytes |
objstm_0046_00.bind487056761a17d11aa7cf24247428a28666ffe8617575aa031ec78325fcaa1f0 |
pdf-objstm-decoded | PDF /ObjStm 46 0 obj (inflated) | 1606 bytes |
font_01_sfnt_off000eb4ee.bin3a47365ba29be93b97be381e34ec3c7ef0a10e0f82cdb3dadd6fb11f2800fdb3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB4EE | 36717 bytes |
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