MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains a link farm pointing to multiple compromised WordPress sites, designed to trick users into downloading malicious files disguised as a PDF reader. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of numerous external links suggests a downloader or phishing lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9999
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://krisoc.ru/uplcv?utm_term=pdf+reader+apk+small+size PDF link annotation
- https://suemsas.com/wp-content/plugins/super-forms/uploads/php/files/ifjk637lbvemtkb007qufr2fm2/bavofekenuvulikofirikul.pdfIn PDF document text
- http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d92660635c---63530641666.pdfIn PDF document text
- https://www.eziblank.com/wp-content/plugins/super-forms/uploads/php/files/md4ivtd87snf6m40r5siahfo33/68161018790.pdfIn PDF document text
- http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089a75818f9d---pixawurasenalatipuzupel.pdfIn PDF document text
- https://oknoplus-omsk.ru/wp-content/plugins/super-forms/uploads/php/files/127bd29e19713de19d4249e03c207cc1/86493496057.pdfIn PDF document text
- https://bojovicsirogojno.com//files/nawurusawepuwipuvedi.pdfIn PDF document text
- http://personnelstrategies.net/userfiles/file/wajesefinuvuvuxesa.pdfIn PDF document text
- http://www.anieliasfx.com/uploads/textareas/file/66507212878.pdfIn PDF document text
- http://wypelnienia.kratex.pl/wp-content/plugins/super-forms/uploads/php/files/8ea227e4735b389f8eb03f507c354165/bifuruzutesigasazawamuki.pdfIn PDF document text
- http://rund.cz/UserFiles/File/76184305289.pdfIn PDF document text
- https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/ccbb02ee73a14307476aa66795571fab/vesifekudumibefofamalit.pdfIn PDF document text
- http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/b8edf59fe0808e979889483e0a54dd63/56520186651.pdfIn PDF document text
- http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160ba8883da329---91591493241.pdfIn PDF document text
- https://www.apartamentselsllacs.com/wp-content/plugins/super-forms/uploads/php/files/g1br31p4pseetbe7umsop40j5b/fowekutilofaweselefa.pdfIn PDF document text
- http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608221f11b887---53615794425.pdfIn PDF document text
- http://bhs-class1957.com/clients/35434/File/wototugoloveweviwovev.pdfIn PDF document text
- https://regeneracion-capilar.com/wp-content/plugins/super-forms/uploads/php/files/666e0a0f049d6bfdfe8e59859d327308/wuderubemikati.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- 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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ee0d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE0D | 5304 bytes |
SHA-256: d0ab0e0766af96c31012bd6fd8e5bee2f79a647f0565b23ff12dc48a685300fe |
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font_01_sfnt_off00010011.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10011 | 10356 bytes |
SHA-256: 19fa1fd984d3ebfd69c8e9788fc340289c9b079be9c596747398a2a25d41e483 |
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