MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
The PDF file contains a link farm pointing to compromised websites, designed to trick users into downloading a "free VPN". The ML classifier and ClamAV detection strongly indicate malicious intent, likely to deliver a phishing payload or malware. The presence of external URIs and a link farm on disposable hosting further supports this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://coretry.ru/uplcv?utm_term=tom+vpn+free+download+for+windows+10 PDF link annotation
- http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bcffd2eb448---69414044236.pdfIn PDF document text
- https://mk-promotions.com/ckfinder/userfiles/files/17236495201.pdfIn PDF document text
- https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082f8e2604e0---65472537773.pdfIn PDF document text
- http://mmdplus.com/userfiles/files/20210606_071824.pdfIn PDF document text
- http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/16081f57f9e073---piguwifupidapenuridu.pdfIn PDF document text
- https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8bd765107e---nevevomavejoxurefisopoz.pdfIn PDF document text
- http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/03198accd23ef457fb9a0b0b3b4c52b9/ruber.pdfIn PDF document text
- https://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/etuftlabp2r1kejfb49dqnth1k/xonepiw.pdfIn PDF document text
- https://weeb.nu/userfiles/file/buduxibomukoduvogubowovub.pdfIn PDF document text
- http://www.rify.us/cms-uploads/files/jurosoni.pdfIn PDF document text
- https://ukdirectremovals.com/wp-content/plugins/super-forms/uploads/php/files/4e16129c76d752b1167f17f7b5fbc963/70268377692.pdfIn PDF document text
- http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/q66kvhmdvp6lhe3l0nlj8mksq9/daredojufakudapezeb.pdfIn PDF document text
- https://soba05.org/wp-content/plugins/super-forms/uploads/php/files/3f02b566e9c17caccf84285b925be8ed/bodar.pdfIn PDF document text
- http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074506307a49---kaburebubipotilematamana.pdfIn PDF document text
- http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160738f5763c4e---rolivelaganateg.pdfIn PDF document text
- http://innotack.com/userfiles/files/rufilokaj.pdfIn PDF document text
- http://cnex.cc/images/blog//file/baraf.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_off0000e0a5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE0A5 | 5484 bytes |
SHA-256: 526bfb6f62efd18fac576b16fb6756ce0a824a80fc99d9e1c763916dc297fa81 |
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font_01_sfnt_off0000f350.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF350 | 10896 bytes |
SHA-256: c9e1198678fc1f9e1c9024793451e85478b1edb197e61e314e01646aadb59d45 |
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