PDF malware analysis — malicious · 41c465cf9bea6c6c

MALICIOUS

PDF

904.5 KB

MD5: e4708b52dbd10501e70bfb85ef7213b6 SHA-1: 0ec1306d254897107e73ffb7a9133b02d33a3ea0 SHA-256: 41c465cf9bea6c6c217f607e975102316937327ee04cf9cccc2c199d89ffd5c9

116 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

This PDF document exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms and LibTIFF processing. The document contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics, which is likely responsible for downloading and executing a secondary payload. Several embedded files were also extracted, suggesting a multi-stage attack. The lack of readable document body text and the reliance on exploit and script execution point towards a malicious downloader.

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.

Filename	Kind	Source	Size
`embedded_file_obj0001.bin` `0bd8e09f0b57046bfa9d32d75735e0f712208f4219e087c77c12b93399511db8`	pdf-embedded-file	PDF EmbeddedFile object 1 at offset 0xD43AC	163 bytes
`embedded_file_obj0002.bin` `c6d8caba340d2a2709f8df90ea7da522242f0886d2d3e36e359560694bc8be3a`	pdf-embedded-file	PDF EmbeddedFile object 2 at offset 0xD449D	1597 bytes
`embedded_file_obj0003.bin` `ba30a7830dbc5f65785aef3134d3c6fba0008b553d3cd0fa771db4b417443d68`	pdf-embedded-file	PDF EmbeddedFile object 3 at offset 0xD4794	24973 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 0xD8BDD	2518 bytes
`embedded_file_obj0005.bin` `500856001a9edb17a299f41c8b34871c12c85d56ec8eff03ef181fca24bb96b5`	pdf-embedded-file	PDF EmbeddedFile object 5 at offset 0xD8ED9	200 bytes
`embedded_file_obj0006.bin` `ce9178a56f9138f5a48e518587c7ff14b65860f1d5be3a8b76dbf047b708a4fb`	pdf-embedded-file	PDF EmbeddedFile object 6 at offset 0xD8FCD	199 bytes
`embedded_file_obj0007.bin` `ddeb4f1c71093289e0b7865d27dcb19d244efd735cb6f00ec8078a297821e005`	pdf-embedded-file	PDF EmbeddedFile object 7 at offset 0xD90C0	1533 bytes
`embedded_file_obj0008.bin` `2ebdd7efeaa1190ff6bad8cbd649b313e3969564018f204e7385b97c2fab1e19`	pdf-embedded-file	PDF EmbeddedFile object 8 at offset 0xD937B	80 bytes
`embedded_file_obj0009.bin` `4a60a9864cdf7382475d51051a03fdc43b32c31eb508893ccfccece34957f9f1`	pdf-embedded-file	PDF EmbeddedFile object 9 at offset 0xD9424	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_off000d9529.bin` `3a47365ba29be93b97be381e34ec3c7ef0a10e0f82cdb3dadd6fb11f2800fdb3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD9529	36717 bytes

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