MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and exhibits characteristics of a fake CAPTCHA lure, designed to trick users into interacting with the document. The document contains numerous links pointing to compromised WordPress upload directories, suggesting it is part of a link farm used to distribute malicious content. While no scripts were directly extracted, the presence of these links and the fake CAPTCHA heuristic strongly indicate an attempt to deliver a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16095ecd39c9dc---66506675686.pdf
- http://madmojo.com/fckupload/file/62648901455.pdf
- https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160ce5a600557f---52046277370.pdf
- https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/539aaf4f001f04055b703297d12fe4bc/36746946746.pdf
- https://gpuhub.net/wp-content/plugins/super-forms/uploads/php/files/o23mgfkjoo5rmlauh9olg9e4kh/xikigesolopamumen.pdf
- https://frontiersneurophotonics.org/wp-content/plugins/formcraft/file-upload/server/content/files/1/16084c4452e643---49009026008.pdf
- http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/447fc58fdd9f61aa5efeffa19e376f9a/30640392902.pdf
- https://allcreaturesinc.com/files/files/numopumusasuxagafare.pdf
- https://jfefood.com/wp-content/plugins/super-forms/uploads/php/files/e0924cd41b9393a68bead19d1a3ed711/42391893434.pdf
- https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c43690a5016---gifizepebiwelo.pdf
- http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1607f61427fa3f---vabawijuzum.pdf
- http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c315dd61c61---gejiwowifisalijevikuba.pdf
- http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/08000728c011ffe4979ad456252285d0/jebuledidozolim.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086c3256309e---deputitumamajinunalipi.pdf
- https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/7fa00f0fc44c29dbacb8045233875d95/46551058282.pdf
- http://bjjiffy.com/upload/zakewuzodurife.pdf
- http://www.highlandmetals.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160c670bd91a4b---ravirivumokajekavevap.pdf
- https://otartufo.com/ckfinder/tartufofiles/files/10757673521.pdf
- https://anandamsanyal.com/userfiles/file/30921207782.pdf
- http://baliretreatcenter.com/olabali_ci/media/images/newsfiles/kelanerelafapanowenemu.pdf
- https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/160743520767b6---lunaxajebikozakujopikos.pdf
- http://contentworks.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606d2e214d52c---zejol.pdf
- https://bodwellassociates.com/wp-content/plugins/super-forms/uploads/php/files/40f5fa25f9a9edc90550bb2768355672/39841247158.pdf
- https://iescolumbus.org/wp-content/plugins/super-forms/uploads/php/files/4c187d5381236c6616bf6bbeb34af65c/11712254487.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=discord+groups+for+gamers
- 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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f4fc.bin0bbae41fa65d45aee8941f9a546d576872ee6451beff04bd4477924cbed3c523 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF4FC | 10816 bytes |
font_01_sfnt_off00010dbd.bin1d2ee3c6604703efa2d83bb1c4c5f7f0b2973f0a9d3a73fe25f6797ede680f19 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10DBD | 17536 bytes |
font_02_sfnt_off00013c14.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13C14 | 16792 bytes |
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