MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file contains numerous embedded URLs that form a link farm, directing users to various external websites. Heuristics indicate these links are hosted on potentially compromised or disposable domains, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing campaigns.
Machine Learning
- Nyx PDF Classifier malicious score 0.9860
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://smidgel.ru/uplcv?utm_term=how+to+use+nokoprint
- http://nikkenj.com/userfiles/file/benijaxuwujokobo.pdf
- https://dynasty888.com/image/files/20210904_033023.pdf
- https://avphunter.ro/ckfinder/userfiles/files/12419327157.pdf
- http://rovitek.com/userfiles/file/duririmawuduvaremof.pdf
- https://rux-thai.com/ckfinder/userfiles/files/92493987096.pdf
- http://thepokewave.com/uploads/files/59229631829.pdf
- http://miamiwars.pl/wp-content/plugins/super-forms/uploads/php/files/2bbb74d153e21ddc1282437da0ab97ed/fapapukiwajubiv.pdf
- http://neodev.space/wp-content/plugins/formcraft/file-upload/server/content/files/1613b2dbb0351e---34865528420.pdf
- https://premium-house.uz/images/file/35797355857.pdf
- https://mysmartedu.com/uploadimages/files/samotipes.pdf
- https://psg66.ru/admin/ckfinder/userfiles/files/28179006989.pdf
- http://domplus.su/userfiles/files/vesosawufigogaribo.pdf
- http://yh-nutri.com/filespath/files/20210909225249.pdf
- http://sloplast.com/userfiles/files/rimafolofu.pdf
- http://c2r.su/uploadfiles/file/2021090110040073499.pdf
- http://sevenseahotel.com/uploads/images/files/95729221180.pdf
- http://www.anclupnapoli.it/userfiles/file/33276080554.pdf
- https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/f9408060c7407daebd6c6c858e95c063/xasuputobopanipaxosufo.pdf
- https://073741256.com/uploads/files/202109031146368531.pdf
- https://xn--80aaijz0c.xn--p1ai/ckfinder/userfiles/files/45227577601.pdf
- https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/2m83imlupngth32fffr0qe6rbc/99471959805.pdf
- https://onlineadda.net/ckfinder/userfiles/files/verupiresogunova.pdf
- https://bompentax.com/quangbasanpham/app/webroot/upload/image/files/pizatuwatibowowetod.pdf
- http://aqbnb.com/uploadfile/file/70912934822.pdf
- http://zaintik.org/files/galeria/files/jusozaguzurowegozi.pdf
- http://thaoduoconline.com/userfiles/image/file/zejutitudesasozizikeru.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e5c3.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE5C3 | 16792 bytes |
font_01_sfnt_off0000fdda.binec2b3beb0c1482c58caecc55726553ec92ddbce56fda01dd3a10148e4bf0e791 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFDDA | 10308 bytes |
font_02_sfnt_off0001153e.bin5dd1c9110401b084775a99dfcaaed687a7af1acabd0c5e2fe8a0a6d38804f1f1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1153E | 17428 bytes |
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