MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by ClamAV as a phishing trojan and a machine learning classifier indicated a high probability of maliciousness. Heuristics identified the document as a link farm, with many embedded URLs pointing to compromised WordPress sites, suggesting an attempt to lure users to malicious content. The presence of these links and the overall structure indicate a phishing or redirection attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
Heuristics 6
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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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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 https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613479b2e1d98---91498664105.pdf In PDF document text
- http://dobryremont.pl/ebobas/portal/app/webroot/img/tmp/file/163139560347.pdfIn PDF document text
- http://fs-select.com/images/blog/file/99428653492.pdfIn PDF document text
- https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/376adc9cac7b90f2b0bde9565c006c30/16374351287.pdfIn PDF document text
- https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614397ea97aa4---75355387005.pdfIn PDF document text
- http://tomekorea.com/userData/board/file/30930940506.pdfIn PDF document text
- http://surveycook.com/upload/tmp/202109/file/22563005257.pdfIn PDF document text
- http://salocchi.it/userfiles/files/miwemedifigulunukixome.pdfIn PDF document text
- https://cargoservice.pl/cargoservice/userfiles/file/gevamixokekenawelogiwowo.pdfIn PDF document text
- https://ambalatender.com/upload/files/33210652463.pdfIn PDF document text
- http://www.europesolidaire.eu/userfiles/files/vewasumezape.pdfIn PDF document text
- https://tailormade-sales-marketing.com/userfiles/file/73497118180.pdfIn PDF document text
- https://alebusph.centralcms.cloud/galeria/files/53265560417.pdfIn PDF document text
- https://organicfertilizerproduction.com/d/files/bezalalazenof.pdfIn PDF document text
- http://kocavietnam.com/upload/files/muxiderodikulobubisaju.pdfIn PDF document text
- https://mollis.rs/files/68481665126.pdfIn PDF document text
- http://resheto.ru/users_images/fck/file/malasegogor.pdfIn PDF document text
- https://fabriziochessa.it/userfiles/file/54899052466.pdfIn PDF document text
- http://ativn.com/upload/file/92211389938.pdfIn PDF document text
- https://nbretail.com.vn/ckfinder/userfiles/files/7046824225.pdfIn PDF document text
- http://geyuping.com/geyuping/uploadfile/file/2021091103324973499.pdfIn PDF document text
- https://leciv.fr/uploads/FCK_files/file/todinugoso.pdfIn PDF document text
- http://ezclasssites.com/var/wwww/dev-ezclasssites-com/data/files/86519076932.pdfIn PDF document text
- https://ryokanclub.com/FileData/ckfinder/files/20210916_2FF4CD7EAA91B411.pdfIn PDF document text
- https://groupburuemas1.com/contents/files/53864358904.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=text+message+apkPDF 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_off0000ebbc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEBBC | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off000103ce.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x103CE | 18628 bytes |
SHA-256: aae9b8678570ad9a3ffca87fe3920e2597949a0d7997dd81ec83b02626595314 |
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font_02_sfnt_off0001347d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1347D | 10292 bytes |
SHA-256: e10ec5f953c7055c390fe4215589b88a993eb13c9a7837319c431a88dc2cc4f3 |
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