PDF malware analysis — malicious · c4c2bf3ac05ec511

MALICIOUS

PDF

1.08 MB Created: 2010-03-04 18:02:04 +08:00 Authoring application: Adobe LiveCycle Designer ES 8.2

MD5: 8e1800356f91971877be998db96d1f48 SHA-1: ba8563ca89b9899da76014bc57b93fa7e83112e5 SHA-256: c4c2bf3ac05ec511441cdbfa8fadf82aedd55b4f9f8131653973af5141abd92c

222 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains embedded JavaScript and exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload from one of the extracted URLs. The presence of an embedded PDF with suspicious static findings further supports the malicious intent.

Heuristics 11

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.
XFA form contains executable script high CVE related PDF_XFA_SCRIPT

PDF embeds an XFA form whose dataset contains a <script> or <xfa:script> block — XFA scripting has been the exploit primitive for several Adobe Reader RCEs (CVE-2010-0188 family, CVE-2018-4901, and others). Plain XFA without scripts is far less risky.
Secondary embedded PDF body has suspicious static findings critical POLYGLOT_CHILD_PDF_STATIC_TRIAGE

A valid PDF body was found at a nonzero offset inside another container and its carved contents matched PDF exploit or lure heuristics. This catches polyglots where the top-level magic routes to ZIP/OLE while a PDF reader or downstream parser opens the hidden PDF payload.
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.
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.
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.
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
AcroForm button with action trigger low PDF_ACROFORM_BUTTON

PDF contains a /Btn form field together with a SubmitForm/URI/Launch/JS trigger — this is the building block of fake 'Download' or 'Open' button overlays used in PDF phishing lures
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.datanumen.com/apdfr/
- http://www.xfa.org/schema/xfa-template/2.5/

Extracted artifacts 14

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0007.bin` `4a60a9864cdf7382475d51051a03fdc43b32c31eb508893ccfccece34957f9f1`	pdf-embedded-file	PDF EmbeddedFile object 7 at offset 0x7988	56 bytes
`embedded_file_obj0008.bin` `2ebdd7efeaa1190ff6bad8cbd649b313e3969564018f204e7385b97c2fab1e19`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0x7A27	80 bytes
`embedded_file_obj0009.bin` `5a1ae56b5d79992962cd7a2b90c8a3c925b39e9e9c053cec9dd39fcaabb79b0b`	pdf-embedded-file	PDF EmbeddedFile object 9 at offset 0x7ADA	1533 bytes
`embedded_file_obj0010.bin` `c6f641b94e3ae73b7ddd9d5d3b8ce05e7497e1b6e0c8f3d84a6934d0ae9aada2`	pdf-embedded-file	PDF EmbeddedFile object 10 at offset 0x7DA2	142 bytes
`embedded_file_obj0011.bin` `500856001a9edb17a299f41c8b34871c12c85d56ec8eff03ef181fca24bb96b5`	pdf-embedded-file	PDF EmbeddedFile object 11 at offset 0x7E74	200 bytes
`embedded_file_obj0012.bin` `560dcced2df6f65386a395771a4721a00980be4d89cc752639746882322da5c3`	pdf-embedded-file	PDF EmbeddedFile object 12 at offset 0x7F71	2518 bytes
`embedded_file_obj0014.bin` `d7fa0bb4b440be27b73f2789111f5954ee699800ac09075cce38842f26f68454`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0xE31C	1610 bytes
`embedded_file_obj0015.bin` `73b89e1b97ed7e13506f21b0d6775a3b571f827a570db26ffc730d2694d01cc2`	pdf-embedded-file	PDF EmbeddedFile object 15 at offset 0xE632	163 bytes
`javascript_obj0037_000.js` `826c5622c798d67e5281cca7e05933dddc90ccdcb0a6177c9f7d06f11bef8f7f`	pdf-javascript-stream	PDF /JS object 37 at offset 0xFAB8	2795 bytes
`javascript_obj0038_001.js` `91ea259764c68d27b8981a339c02d8ea92224ae5c0d0cd0a7c8f3d645d599090`	pdf-javascript-stream	PDF /JS object 38 at offset 0xFD85	902 bytes
`javascript_obj0039_002.js` `f8721569904600df33f536ddc9f4942717077f9d6c3c4253a8f4de5650fc6531`	pdf-javascript-stream	PDF /JS object 39 at offset 0xFEE4	1367 bytes
`embedded_pdf_script_000084a4.bin` `84a822e2adf4b48bd0e0af278cbe5231e3abba233dc3273c75c8ddb552ef0f7f`	pdf-embedded-script	PDF raw stream script payload at offset 0x84A4	24647 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 long base64-like blob(s).
`font_00_sfnt_off00000569.bin` `3a47365ba29be93b97be381e34ec3c7ef0a10e0f82cdb3dadd6fb11f2800fdb3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x569	36717 bytes
`polyglot_child_pdf_off00104545.pdf` `a340f55c32f10c44aabf261fff1a2d86d433826189d427d4de36f683832c1970`	polyglot-child-pdf	Secondary PDF body inside pdf container at offset 0x104545	67385 bytes

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