MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF document contains a callback phishing lure, instructing the user to call a phone number regarding a fabricated issue. While no scripts were directly extracted, the presence of multiple links to potentially compromised WordPress sites and a link farm structure suggests an attempt to host malicious content or redirect users. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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://musorcentrum.hu/files/article/file/fagasisagurolugilivilozu.pdf In PDF document text
- https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ca5c1c17694---rimurolumizodo.pdfIn PDF document text
- http://www.psyforyou.nl/upload/fckeditor/file/mazuwoteworabo.pdfIn PDF document text
- https://piataafacerilor.ro/app/webroot/files/userfiles/files/xegojifokipi.pdfIn PDF document text
- http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a92ac269aed---pozotakapijemusuxutufiton.pdfIn PDF document text
- http://fashioncenterpoint.com/wp-content/plugins/super-forms/uploads/php/files/f95a9e43f1d6ad2a772c637a8d1e163a/47946030519.pdfIn PDF document text
- http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1612dc34a2b656---31987175579.pdfIn PDF document text
- http://anhuifan.com/upload_fck/file/2021-5-5/20210505102739275518.pdfIn PDF document text
- https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/160d77e6806fa3---43076104376.pdfIn PDF document text
- http://aaaexpressac.com/userfiles/file/kumobufiwegodevo.pdfIn PDF document text
- https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/qranre95dia9p0n9qjii9to9c5/tixaruluteku.pdfIn PDF document text
- https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/446b291216f05c76d85300b507aadd08/87506356050.pdfIn PDF document text
- http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/grsea90f23cumidktu0lvnq3jg/76976403697.pdfIn PDF document text
- https://amgaa.org/temp/files/98037000682.pdfIn PDF document text
- http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160ae9e0e2c9c1---23032153028.pdfIn PDF document text
- https://autoprofi.ua/userfiles/file/difuvanizasufeponufajemu.pdfIn PDF document text
- http://sys-svinding.dk/userfiles/file/89478453837.pdfIn PDF document text
- https://ciar.vn/uploads/image/files/texepuriz.pdfIn PDF document text
- https://www.chesapeake-lighting.com/wp-content/plugins/super-forms/uploads/php/files/ffe394078a0703306aa2a3ded3533150/gatujurafivuwagomobuseg.pdfIn PDF document text
- https://yastudio.net/wp-content/plugins/super-forms/uploads/php/files/4a63421d3fb1c2d278159808f6d12b09/9887504284.pdfIn PDF document text
- https://samsungvrvklima.com/upload/ckfinder/files/77982973812.pdfIn PDF document text
- https://honghow.com/ckfinder/userfiles/files/3859661739.pdfIn PDF document text
- https://talleresimad.com/images/subidas/files/8420863261.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=how+to+find+axis+of+symmetry+in+intercept+formPDF 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_off0000c39c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC39C | 11028 bytes |
SHA-256: d17bafb8cd0f55920f06c3164e17522e756883b484ea9b15d40ff0c41fe88f51 |
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font_01_sfnt_off0000dd4c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD4C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000f55e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF55E | 17056 bytes |
SHA-256: 11b54db86c47105927c2e8fe2fd1c955b21444d15bbee22858a1a9f703f0daf0 |
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