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 Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. Heuristics identified multiple links pointing to compromised WordPress upload directories, suggesting a link farm designed to redirect users to malicious content. The presence of these links indicates an attempt to exploit users by directing them to potentially harmful websites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9840
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 https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/1614ad0ac35b41---87776556502.pdf In PDF document text
- http://epmachine.ru/d/files/vikes.pdfIn PDF document text
- https://sensesgrouphk.com/louis/STARKGROUP/ckfinder/userfiles/files/kivuwezusepixatezagox.pdfIn PDF document text
- http://offerparts.com/upload/files/49145141067.pdfIn PDF document text
- http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/16147bea65ad5b---tuwusuxokubizedakoz.pdfIn PDF document text
- http://www.altrus.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1614d8dcc374e1---91132399472.pdfIn PDF document text
- http://casms.org/atts/news-files/file/nikuxixixofemufiwe.pdfIn PDF document text
- https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/9obscsf89tgsm0qf3firpobdcq/kodaxotekerajidumax.pdfIn PDF document text
- http://pampa.be/uploads/userfiles/files/93289584608.pdfIn PDF document text
- https://pottoka.info/files/galeria/files/sawixutovuva.pdfIn PDF document text
- http://fygl.net/uploads/file/241008397649.pdfIn PDF document text
- https://lawina-radom.pl/files/file/xowesuf.pdfIn PDF document text
- http://around-sicily.net/userfiles/file/9962431938.pdfIn PDF document text
- http://namadagaskare.ru/ckfinder/userfiles/files/kokeziwesagaguxuvivi.pdfIn PDF document text
- http://shrlie.com/upload_fck/file/2021-9-2/20210902103434282618.pdfIn PDF document text
- http://embeddedhr.com/ckfinder/userfiles/files/55325520981.pdfIn PDF document text
- https://moolans.com/uploads/files/73520097069.pdfIn PDF document text
- http://ximangsongthao.com/app/webroot/uploads/files/37510792459.pdfIn PDF document text
- https://b2bircruise.travflex.com/bot/ckfinder/uf/files/faxuv.pdfIn PDF document text
- http://www.enfersalus.com/ckfinder/userfiles/files/56804993852.pdfIn PDF document text
- https://www.prieur-equipement.com/ckfinder/userfiles/files/danimawuvubemulibi.pdfIn PDF document text
- http://aylabawadi.ae/userfiles/file/29995001871.pdfIn PDF document text
- http://simoncaulkin.com/images/geredalozodof.pdfIn PDF document text
- http://automag.pl/userfiles/file/gigavofemareled.pdfIn PDF document text
- https://gencerenerji.com/resimler/files/70066165464.pdfIn PDF document text
- https://www.nissan-utilitaires-melun.fr/ckfinder/userfiles/files/kedem.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=sync+outlook+contacts+to+androidPDF 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_off0000b82e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB82E | 10612 bytes |
SHA-256: c038e29def3cb14e665d2131158b30c007cc51d846e16bf6ab587b865a4aeb85 |
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font_01_sfnt_off0000d091.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD091 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000e8a3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE8A3 | 18612 bytes |
SHA-256: 984f93db7eb737d27bcf9049ec9e363f27baafa27f3a103b386b1203bacfbea5 |
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