Malicious PDF — malware analysis report

Static analysis result for SHA-256 96687af982ecb73b…

MALICIOUS

PDF

976.5 KB
MD5: f0e7feeb89d67d1eb0a887abf4ad7a7a SHA-1: dbc93b3a8a013b7fda0dae60a09f3200938493f4 SHA-256: 96687af982ecb73b7411f046d63bdc392b1bb554fd307715ed1db0f77d428ef1
114 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1059.001 Command and Scripting Interpreter: PowerShell T1566.001 Phishing: Spearphishing Attachment

The PDF file contains a critical heuristic indicating exploitation of CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. This suggests the document is designed to deliver a malicious payload upon opening in a vulnerable application. While no specific script was directly extracted and analyzed, the presence of embedded files and JavaScript actions points towards a downloader or exploit delivery mechanism.

Heuristics 8

  • 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
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules. (matched inside decoded stream)
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules. (matched inside decoded stream)
  • 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://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/

Extracted artifacts 14

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0001.bin
04b8af10e5b228b5612c950abc133b1a5b6b60eb00e4ff25a64afb363a85a768		 pdf-embedded-file PDF EmbeddedFile object 1 at offset 0xE62FD 163 bytes
embedded_file_obj0002.bin
e7b050b4d5f9b000166db6c39fc3cec28e0f559d74566f01b618f030ad2f2e27		 pdf-embedded-file PDF EmbeddedFile object 2 at offset 0xE63ED 1587 bytes
embedded_file_obj0003.bin
affe261c3500eacffd2adc8024f5e26b3b729a11069254b580ba2177ffbe0980		 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.bin
560dcced2df6f65386a395771a4721a00980be4d89cc752639746882322da5c3		 pdf-embedded-file PDF EmbeddedFile object 4 at offset 0xEAB7D 2518 bytes
embedded_file_obj0005.bin
500856001a9edb17a299f41c8b34871c12c85d56ec8eff03ef181fca24bb96b5		 pdf-embedded-file PDF EmbeddedFile object 5 at offset 0xEAE79 200 bytes
embedded_file_obj0006.bin
863537ccdffd88224d5b70221bc496b5600aa8beb0feda26a0ac48081644ac35		 pdf-embedded-file PDF EmbeddedFile object 6 at offset 0xEAF6D 237 bytes
embedded_file_obj0007.bin
385ee16f9e56270fc4cd495ba71f508ac4f3a53b1bbd78bc1f8ca79af5d84793		 pdf-embedded-file PDF EmbeddedFile object 7 at offset 0xEB083 1533 bytes
embedded_file_obj0008.bin
2ebdd7efeaa1190ff6bad8cbd649b313e3969564018f204e7385b97c2fab1e19		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xEB340 80 bytes
embedded_file_obj0009.bin
4a60a9864cdf7382475d51051a03fdc43b32c31eb508893ccfccece34957f9f1		 pdf-embedded-file PDF EmbeddedFile object 9 at offset 0xEB3E9 56 bytes
stream_002_off00000374.js
f8721569904600df33f536ddc9f4942717077f9d6c3c4253a8f4de5650fc6531		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x374 1367 bytes
stream_003_off0000055a.js
91ea259764c68d27b8981a339c02d8ea92224ae5c0d0cd0a7c8f3d645d599090		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x55A 902 bytes
stream_009_off000e5cc5.bin
785103e079820125430834c8a2f896d512a2c16ee7d224705b6b607f90fec865		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xE5CC5 1278 bytes
objstm_0046_00.bin
d487056761a17d11aa7cf24247428a28666ffe8617575aa031ec78325fcaa1f0		 pdf-objstm-decoded PDF /ObjStm 46 0 obj (inflated) 1606 bytes
font_01_sfnt_off000eb4ee.bin
3a47365ba29be93b97be381e34ec3c7ef0a10e0f82cdb3dadd6fb11f2800fdb3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB4EE 36717 bytes

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