MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file is a PDF that contains a large number of external links, many of which point to compromised WordPress sites. The ML classifier and ClamAV both flagged this PDF as malicious, indicating a phishing or malware distribution intent. The presence of numerous links on potentially compromised infrastructure suggests an attempt to lure users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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://archism.ru/uplcv?utm_term=fixed+income+for+senior+citizens
- https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/272eaecd95c1508484e665e521fcd988/92085759850.pdf
- http://vudafrique.com/wp-content/plugins/super-forms/uploads/php/files/9bde63d0d8d99a49a69cac4733ea6cf3/62286627768.pdf
- http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160a64b7206083---29028262039.pdf
- https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/8rff1p1ehruqr5e3ch7ffc4sfr/76071280006.pdf
- http://runo34.ru/attachments/file/ruwoleg.pdf
- https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/gm3sreh5qc0lt2vvpdrn05je74/85030416998.pdf
- http://zonweringbelgie.nl/ckfinder/userfiles/files/49333836006.pdf
- http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/426cbd397eae0c98cd56474f3122d0c7/85248917295.pdf
- https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/ham4dbadujvnp69t8p6dm1ivq1/90423748138.pdf
- http://aarogyamedico.com/userfiles/file/49991540634.pdf
- https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d74d525727e---mukiwarorilijepizodu.pdf
- http://globalcenterhotels.com/bot/ckfinder/uf/files/zulejibusifaximu.pdf
- http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b312750cbd1---pozetirigojodo.pdf
- http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/16083244d153da---77227352954.pdf
- https://nadamasristorante.it/file/gebixelimosofat.pdf
- https://mamo-tato.ro/userfiles/file/xubivojugit.pdf
- https://nanosoft.mn/images/content/File/riwanogaxinowik.pdf
- https://personalloan2u.com/wp-content/plugins/super-forms/uploads/php/files/fa16a5c1358cd433b9bca570e3814132/fewenisusepi.pdf
- http://slesnick.net/userfiles/files/gixezum.pdf
- https://www.helpfulhunks.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609118fa6320f---fuxivojokirezoladagol.pdf
- http://bazis-expertiza.ru/ckfinder/core/connector/php/files/28792655068.pdf
- https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/86vbi98ugqvvbgglii1r8e814a/82568462616.pdf
- http://roland-toys.eu/userfiles/file/25611581064.pdf
- https://traonguoc.vn/wp-content/plugins/super-forms/uploads/php/files/k79uc1trmc66jm6l5kl7na3kbu/39804187549.pdf
- http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a222948a50c---vilip.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_off0000e5ba.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE5BA | 16792 bytes |
font_01_sfnt_off0000fdd1.bince61136946e94d549bbeb8e58cd75d3bd4c7662f188fb9935009daa117161696 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFDD1 | 10568 bytes |
font_02_sfnt_off000115ec.bina5c64672d41e4a8cac7215b436e095ec10e980ca22498f121a478a60a28d6388 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x115EC | 17112 bytes |
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