MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, with numerous URLs pointing to potentially compromised websites or disposable hosting, likely intended to lure users to malicious content. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports this, suggesting a tactic to manipulate search engine results or distribute links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://yourhealthyanswer.com/ckfinder/userfiles/files/6307059247.pdf In PDF document text
- https://ferdavagnar.is/images/fck/file/zudexezewununap.pdfIn PDF document text
- https://kraftyz.in/ckfinder/userfiles/files/mazigojugibugofe.pdfIn PDF document text
- https://www.alignerco.ca/wp-content/plugins/super-forms/uploads/php/files/8a2cd33bd6dc741190525926f2eca929/86920530881.pdfIn PDF document text
- http://anjilh.com/uploadfile/file///2021043017032194.pdfIn PDF document text
- https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/1949b9c747f5db724be866e85501db2b/98340423732.pdfIn PDF document text
- https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9a6d53d8d---9161046255.pdfIn PDF document text
- https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160de849cea3f8---seberisevanifofidanivazo.pdfIn PDF document text
- https://takeorders.online/wp-content/plugins/super-forms/uploads/php/files/h7gl87ue8pqstredt4jbnhaknn/gupabekadibomuwapusafawov.pdfIn PDF document text
- https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d12df66713---koxefozifivef.pdfIn PDF document text
- http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160d7bb9b3a55d---62376468083.pdfIn PDF document text
- https://ka-base.no/images_content/file/saputozuwafupogajeta.pdfIn PDF document text
- http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160908dcb4a766---xutukevoregamavewad.pdfIn PDF document text
- https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/fc84474f8d5c55f360a55c7ce05fb871/fipopuwugifus.pdfIn PDF document text
- http://sharon-barron.com/userfiles/files/49104657529.pdfIn PDF document text
- https://c-effeimmobiliare.it/file/masaxokagimuboweg.pdfIn PDF document text
- http://alemotta.com/resources/original/file/xelibonizetatuzovunef.pdfIn PDF document text
- http://www.themixchange.com/userfiles/files/nakaduluzawapo.pdfIn PDF document text
- https://xosobacninh.vn/webroot/img/files/71313005624.pdfIn PDF document text
- https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079cf41932dd---6780576254.pdfIn PDF document text
- https://neksav.com/upload/ckfinder/files/siwaliwuda.pdfIn PDF document text
- http://mujuerp.com/uploads/ckeditor/files/20210529090525.pdfIn PDF document text
- http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/1607c4177991ec---74578529603.pdfIn PDF document text
- https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/720b133f205b88b042ed3970b7fedfc6/1588657151.pdfIn PDF document text
- http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/agkt1bbkvpbt58ff3uo7gcsqk1/26408921162.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=example+of+investigationPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f125.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF125 | 19284 bytes |
SHA-256: cdc9ae8039d9d53f3d97545ba4b3309f07b30fc0007f9c9268f9490e5150acdd |
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font_01_sfnt_off00012443.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12443 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00013c5a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13C5A | 10752 bytes |
SHA-256: e501e9f0632aa12d39848e3a67bb6d62b0451587510af21be0c65d753a6bc7be |
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