Malicious PDF — malware analysis report

Static analysis result for SHA-256 f249e605e5c81d96…

MALICIOUS

PDF

904.6 KB
MD5: 22eff3ff376cde894530469c97ce71ff SHA-1: bc3fb74e950ea17047d9786a013ef4d1495ac8c3 SHA-256: f249e605e5c81d96f977e1e1ca5ae36a534a12643f177bc4cb89671eca8b785b
116 Risk Score

Malware Insights

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

The PDF file contains a critical vulnerability exploit for CVE-2010-0188, targeting Adobe Reader. It also contains embedded JavaScript and an embedded file, indicating it's designed to download and execute a second-stage payload. The presence of XFA forms and embedded files suggests a complex delivery mechanism.

Heuristics 9

  • 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)
  • PDF paints image(s) but contains no text operators info PDF_IMAGE_ONLY_LURE
    PDF has 1 image XObject(s) and the content stream contains no text-emitting operators (BT/ET, Tj, TJ, ', ") in either raw bytes or decompressed streams — this is the screenshot-as-PDF pattern used to bypass text-based scanners and to deliver instructions purely through rendered pixels. It is informational unless paired with invisible links or risky URI context.
  • 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 13

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0001.bin
87046216f468ff022a004c6f1b2643de71a2ace822950268c7e8803523369f32		 pdf-embedded-file PDF EmbeddedFile object 1 at offset 0xD43AC 163 bytes
embedded_file_obj0002.bin
741130904cf17122a0a558d2152514ab50ca39f560c266697198ca04be2693c4		 pdf-embedded-file PDF EmbeddedFile object 2 at offset 0xD449D 1596 bytes
embedded_file_obj0003.bin
691e6cd47e71c21b995cce15ee04bea09a31b48cbcd188f8cafb426356bba813		 pdf-embedded-file PDF EmbeddedFile object 3 at offset 0xD4794 24975 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 0xD8C0F 2518 bytes
embedded_file_obj0005.bin
500856001a9edb17a299f41c8b34871c12c85d56ec8eff03ef181fca24bb96b5		 pdf-embedded-file PDF EmbeddedFile object 5 at offset 0xD8F0B 200 bytes
embedded_file_obj0006.bin
ce9178a56f9138f5a48e518587c7ff14b65860f1d5be3a8b76dbf047b708a4fb		 pdf-embedded-file PDF EmbeddedFile object 6 at offset 0xD8FFF 199 bytes
embedded_file_obj0007.bin
d04ddabff40e4cd9a4a8def00715e01bdeda6a320bf22769bebd07eb116378fa		 pdf-embedded-file PDF EmbeddedFile object 7 at offset 0xD90F2 1533 bytes
embedded_file_obj0008.bin
2ebdd7efeaa1190ff6bad8cbd649b313e3969564018f204e7385b97c2fab1e19		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xD93AD 80 bytes
embedded_file_obj0009.bin
4a60a9864cdf7382475d51051a03fdc43b32c31eb508893ccfccece34957f9f1		 pdf-embedded-file PDF EmbeddedFile object 9 at offset 0xD9456 56 bytes
stream_002_off00000363.js
f8721569904600df33f536ddc9f4942717077f9d6c3c4253a8f4de5650fc6531		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x363 1367 bytes
stream_003_off00000549.js
91ea259764c68d27b8981a339c02d8ea92224ae5c0d0cd0a7c8f3d645d599090		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x549 902 bytes
objstm_0044_00.bin
882dbe8f645af46cefc5e2695c3912cf111c9293da733274a1504212921b2c2d		 pdf-objstm-decoded PDF /ObjStm 44 0 obj (inflated) 1006 bytes
font_00_sfnt_off000d955b.bin
3a47365ba29be93b97be381e34ec3c7ef0a10e0f82cdb3dadd6fb11f2800fdb3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD955B 36717 bytes

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