MALICIOUS
104
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous links to compromised CMS upload directories, suggesting an attempt to host and distribute malicious files. The presence of a 'download button' heuristic further supports a lure-based attack pattern. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9922
Heuristics 6
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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External URI info PDF_URIPDF contains an external URL action
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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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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://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acaab358ae2---dowilisagomuwu.pdf
- http://alsumiri.net/wp-content/plugins/super-forms/uploads/php/files/af77a16d468cb0e78e360e6ae4f159f5/pibubi.pdf
- https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098bac423bd0---75147120777.pdf
- http://infinity-pro.ru/userfiles/file/parabitoredot.pdf
- https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/ee03f6d2b5ac6d868122c14eaa9ca8b1/21463258513.pdf
- http://flexa.cz/docs/file/93901858626.pdf
- https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/d5102ee6e20e346de76a0c24020db1f2/61726004376.pdf
- https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/43f7481b3e3fc691b149b001366d1a8d/56540290825.pdf
- http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b622a90a6c1---37773867573.pdf
- https://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16082fba2776a1---mutip.pdf
- http://vstarmp.cn/upload/files/20210620_144214.pdf
- https://shared401k.com/wp-content/plugins/super-forms/uploads/php/files/a8b9699e53d5eaa17753a9760ac92593/84742645919.pdf
- http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bded79a19c8---32730891351.pdf
- https://digireg.lu/upload/21029258789.pdf
- http://delawaretravelmedicine.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082384445707---parebilojufoluraka.pdf
- http://wf515345.tw/CKEdit/upload/files/99120040589.pdf
- http://geometrabottero.it/userfiles/files/20423684608.pdf
- http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/35o6ch8b6rm69gvmd9jvdj6530/kiwitekasujutufibalu.pdf
- http://ajtoablakcentrum.com/_user/file/jevasedonoxopenekuriji.pdf
- http://rld-carbon.ru/file/gixulot.pdf
- https://beribuket.ru/wp-content/plugins/super-forms/uploads/php/files/7f86f32f433a914dfa202c0ccd9eff2d/57566880667.pdf
- http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b47d0d66694---vutufumezopi.pdf
- https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/b8jsjmd487fu6j2aolu03m45c0/vovofuxafawoxizas.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=ts+tet+previous+question+papers
- https://mediaget.com/userfiles/files/ramuzumonizigotovowapur.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e1f4.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE1F4 | 16792 bytes |
font_01_sfnt_off0000fa0b.binff73d3e3354e15c8eea4677d6c78cee7a8f3e4b6c08510ac1c0f936e3ddc159a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFA0B | 10472 bytes |
font_02_sfnt_off000111fa.bind0e02ea597b059e12c640018e4c0b859d2fbe31b167f59dc9fd0dc6423c65742 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x111FA | 16488 bytes |
font_03_sfnt_off000128e2.binfe24083f40a0a0a1d6165fa4dafcb835cfd1ac8dde313d47b3e47d278c2cbfe7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x128E2 | 17296 bytes |
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