MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous links to external PDFs hosted on compromised WordPress sites and disposable domains, suggesting a link farm designed to distribute malicious content. The embedded URLs and link farm structure strongly suggest an attempt to trick users into downloading further malicious files, likely as part of a phishing campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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://krisoc.ru/uplcv?utm_term=russian+grammar+pdf+download PDF link annotation
- http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ea1c1a9a2f---kukivurexoparaz.pdfIn PDF document text
- http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6f2b9984d6---dogiwimux.pdfIn PDF document text
- https://amitadevnani.com/userfiles/file/wuvejinade.pdfIn PDF document text
- http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1609b2ed583184---malanesasopinawutigipeli.pdfIn PDF document text
- http://www.grupohk.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160afc19928b13---52245347426.pdfIn PDF document text
- https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/2e9aa05654a49c338c8f4c0eb83e2d59/48494057503.pdfIn PDF document text
- http://novichiha.ru/pic/file/wiserodab.pdfIn PDF document text
- http://logiccpacma.com/ckfinder/userfiles/files/49806588056.pdfIn PDF document text
- https://blsautomation.com/ckfinder/userfiles/files/70005867802.pdfIn PDF document text
- https://unosms.us/userfiles/file/90111007881.pdfIn PDF document text
- http://humanitool.ru/userfiles/file/57030419621.pdfIn PDF document text
- https://simondaulte.com/ckfinder/userfiles/files/fifirebaku.pdfIn PDF document text
- https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/b353171204b0bf5730940326d93ce563/16876515291.pdfIn PDF document text
- http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d00c136778---robedagabevepe.pdfIn PDF document text
- http://labcoop-jsc.com/wp-content/plugins/super-forms/uploads/php/files/1959up1ljdcn30aim7s229hpj3/39205607380.pdfIn PDF document text
- https://www.asahinafunnels.com/wp-content/plugins/super-forms/uploads/php/files/or2sp1rqsqm2lh7jbqhsgs3usp/fuxusugudinej.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_off0000dc12.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC12 | 5460 bytes |
SHA-256: fe536db26d5524a550ca99f9663387d6ca0cc294ff85f0a513bdca53fc457af9 |
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font_01_sfnt_off0000eea8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEEA8 | 13964 bytes |
SHA-256: 46dddb12f99d735944c5b624093120620226aa48c65383237e5b5f1ba4cf78f7 |
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