MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier indicating a high probability of maliciousness. The file contains numerous external URIs and links to compromised WordPress upload storage, suggesting it is part of a link farm designed to redirect users to malicious sites. The presence of these links and the overall detection profile indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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://oniceh.ru/uplcv?utm_term=dondo+french+book+pdf
- https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/6731ec98fd210af584d07fbd17942632/wudusodizagekapasud.pdf
- https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140013d429d7---jajomagib.pdf
- http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c14e0568b2---76595051707.pdf
- http://airmon.hu/images/files/27407593034.pdf
- http://sparan-art.ru/ckfinder/userfiles/files/21553410609.pdf
- http://amicissiapiemonteisa.it/userfiles/files/subebejudokoforuderog.pdf
- http://votava2.altrodesign.eu/ckfinder/userfiles/files/rulazuretaveritadunepe.pdf
- http://3234.us/data/attachment/file/17569891710.pdf
- https://iieng.org/editor/ckfinder/userfiles/files/zekelobudifobevexeg.pdf
- http://synphabase.ch/upload/file/96239722278.pdf
- http://newtarrytowndeli.com/uploads/files/dekevuro.pdf
- https://www.loisirs-auto-occasion.fr/ckfinder/userfiles/files/galezaronobuba.pdf
- https://beaufortbond.com/wp-content/plugins/super-forms/uploads/php/files/ced59a6cb0e492aef0ce6b025a27f5f9/gomemeje.pdf
- http://ahjygjg.com/upload_fck/file/2021-9-14/20210914050536538841.pdf
- https://vizesblokk.hu/files/file/jakuxonisazev.pdf
- http://chretkinia.pl/userfiles/file/83859566754.pdf
- http://cpk.by/ckfinder/userfiles/files/58117571069.pdf
- https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/748bee290f5ffff77c28ac0692726967/sujoguvipemip.pdf
- https://volpatoebrum.com.br/_common/admin/scripts/ckfinder/userfiles/files/mesotogoxuludinixosomigun.pdf
- https://demideopool.ro/ckfinder/userfiles/files/50850505167.pdf
- http://sowiik.pl/userfiles/file/nokenoxenerikodavamus.pdf
- http://condosworld.com/abisol1/userfiles/files/54967689812.pdf
- http://elard-group.com/ckfinder/userfiles/files/zimipifeka.pdf
- http://seamacros.com/upload/file/46697192898.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_off0000e40f.binbe31131032abdbc7a7f981b8d2ed02662735a6f488dae4c2e35ff8e1186f638d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE40F | 10384 bytes |
font_01_sfnt_off0000fb2d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB2D | 16792 bytes |
font_02_sfnt_off0001133f.bin2acce5b49ac3fc4f84b45a81c8ebe14e096cdf4bd387d45074d6f40f3295fb8c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1133F | 21248 bytes |
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