MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs, many pointing to potentially compromised or disposable domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports the nature of the document as a link farm.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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://kvkumariajnkvv.org/singhania/downloads/file/kobejivegibikolurenunuj.pdf In PDF document text
- http://jiachuankeji.com/upload_fck/file/2021-9-16/20210916122233437820.pdfIn PDF document text
- https://mariellatriolo.it/public/file/6022295754.pdfIn PDF document text
- http://santeh.md/img/files/mumoxiben.pdfIn PDF document text
- https://uudanbury.life/files/file/53183342029.pdfIn PDF document text
- http://exclusivelimoservice.com/ckfinder/userfiles/files/muvolebobugisaba.pdfIn PDF document text
- https://montpellier-business-plan.com/mbp/upload/images/images/upload/ckfinder/95959163813.pdfIn PDF document text
- http://msmzizkov.cz/data/dokumenty/bovevurowanijegijozobaw.pdfIn PDF document text
- http://musikpark-live.de/userfiles/file/zexibikowoza.pdfIn PDF document text
- http://4998horo.gmmwireless.com/contents/files/xorasivovuvupelod.pdfIn PDF document text
- http://lube-stc.com/ckfinder/userfiles/files/zogezimiwizasel.pdfIn PDF document text
- http://library.nesdb.go.th/ic/admin/ckfinder/userfiles/files/nisiripuxarupotu.pdfIn PDF document text
- https://oncetrabzon.com/resimler/files/fivexaxuxevetu.pdfIn PDF document text
- http://autosoftware.company/autoresponders_images/files/zerimaferabu.pdfIn PDF document text
- https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613034395330a---xixakugizexeza.pdfIn PDF document text
- https://relans-nn.ru/images/docs/file/728615412.pdfIn PDF document text
- http://ghibms.com/userfiles/files/zenilumite.pdfIn PDF document text
- http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1613de2997b2bd---fubemifukipoduvu.pdfIn PDF document text
- http://werder-ritter.de/UserFiles/File/82675939908.pdfIn PDF document text
- http://acpiindia.com/userfiles/file/55371568784.pdfIn PDF document text
- https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/df1d665218766b4d9fb1d01757afb072/tetukalo.pdfIn PDF document text
- http://roberlo.cz/www/files/file/85854983206.pdfIn PDF document text
- http://barudan.hk/UploadFile/file/20210911212506934.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=friday+night+funkin+week+7+free+to+playPDF 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_off0000e0d1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE0D1 | 11028 bytes |
SHA-256: 6013e9caed13a76b49e6b25ba12816960552831b9ec2af7739b11b8455ce0ae4 |
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font_01_sfnt_off0000fa42.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFA42 | 19064 bytes |
SHA-256: e93f5fc9d581b63e8aaa6a1d880d4787885cc9e2a3cffa1cb409ce8719bad70d |
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font_02_sfnt_off00012be4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12BE4 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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