MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV, indicating malicious intent. The presence of a 'Fake CAPTCHA' heuristic suggests the document aims to deceive the user into performing an action, likely to download or execute a secondary payload. Several URLs point to compromised CMS uploads and link farms, indicating a distribution mechanism for malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHADocument displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
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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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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://fedoro.ru/upload/file/92771379555.pdf
- https://bd-sokolovska.eu/userfiles/file/ruzididedajanurelusixikab.pdf
- https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160752b4382fc9---kuzegizafadureva.pdf
- https://www.andrecampbell.ca/wp-content/plugins/super-forms/uploads/php/files/21f4ed52775cb817c1feb545d0facaac/dirapitumidanoz.pdf
- http://irinka.org/ckfinder/userfiles/files/46303430783.pdf
- http://stkvn.ru/wp-content/plugins/super-forms/uploads/php/files/5fb9dff1de0e556417fb943137052e92/1179687011.pdf
- https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/d5qktp479h8uglanp9n1tqiig5/12478172179.pdf
- http://animationcoach.com/userfiles/file/26293763159.pdf
- http://shinserviceodi.ru/wp-content/plugins/super-forms/uploads/php/files/b241fca4d3f4f287f4b4eba61fde7a4b/vokaxadagurodazelaxi.pdf
- http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cfea1862dc---torajoxo.pdf
- https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/tftajt3m47g1hdq3k72cv51620/90614392816.pdf
- https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093c63c0f104---vebiburokotajewusabok.pdf
- https://contabil-fiscal.ro/mm/file/vitewa.pdf
- https://atlanthealth.com/wp-content/plugins/super-forms/uploads/php/files/ee59fe7f6cd01d6b94e6a5c7f861b770/pixasopisukixerumopejibe.pdf
- https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/413ea925d4edc1c3ebc5d3a7a8d6e343/64424883179.pdf
- http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c9d2eb3ee6---mibavigepezofas.pdf
- https://nadamasristorante.it/file/leraperu.pdf
- https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080993be7ce8---zobevuzopam.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=the+tale+of+chunhyang+story
- 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://scripts.sil.org/OFL
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000117ff.binc81d82c102b72069582e75130332349bebdf8fc5524bd31deb23efb4ca86c3f1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x117FF | 4424 bytes |
font_01_sfnt_off000127b8.bin3eb3fd00b02e02a3be815e84e6fbf6f952f83c32ae6e29f1348a838a12fa7f43 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x127B8 | 5028 bytes |
font_02_sfnt_off000138da.bine37644167db03895e3d6b9d81db4d634ed468895c8e0ea5740a0ca7686b473fd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x138DA | 11420 bytes |
font_03_sfnt_off00015f72.bin9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15F72 | 4324 bytes |
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