MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, specifically as a phishing trojan. It contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting it functions as a link farm. The primary goal appears to be directing users to external malicious URLs, likely for phishing or malware distribution.
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://infrive.ru/uplcv?utm_term=exercicios+humanismo+pdf PDF link annotation
- http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/1607001f0495ae---11933303756.pdfIn PDF document text
- http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1609ba5a7c4783---xulebat.pdfIn PDF document text
- http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a75ea04dcf2---80531873403.pdfIn PDF document text
- https://centrosteadycam.it/wp-content/plugins/super-forms/uploads/php/files/e2703f1471762e60f1d5e422ec8161ac/59071712899.pdfIn PDF document text
- http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5876ae882f---86952053765.pdfIn PDF document text
- https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160a173654aca0---8813984704.pdfIn PDF document text
- http://grandchainfamilyfoundation.org/clients/85333/File/zemuwosajiraxe.pdfIn PDF document text
- https://benqmusicworkshop.com/fupload/file/86741790390.pdfIn PDF document text
- http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ea004a26f2---zametezilil.pdfIn PDF document text
- https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/1608ae1b411e8c---17528154616.pdfIn PDF document text
- http://thomasbelldescendants.com/clients/40432/File/1115668047.pdfIn PDF document text
- https://makemycake.gr/wp-content/plugins/super-forms/uploads/php/files/1v9fh4d48c3e4tmlp3c45cb777/vebofonemitadakom.pdfIn PDF document text
- http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1607bc35ed1483---7908487420.pdfIn PDF document text
- http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a5e339dcd66---ranawimegotirigexavidup.pdfIn PDF document text
- http://anhuishangbiao.com/upload_fck/file/2021-5-24/20210524003412599842.pdfIn PDF document text
- http://xn--clinicaquirogavilario-vbc.com/wp-content/plugins/super-forms/uploads/php/files/m7hgr8s9l466cbge3flj73i840/narafawetofotozatefigalij.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_off00011241.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11241 | 5388 bytes |
SHA-256: c3ebde0bddd8f3cad23a09399cdc49fc9ee5aaf2d0afa2750759fd62334c8ae1 |
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font_01_sfnt_off0001246e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1246E | 13696 bytes |
SHA-256: 83a37a5ec4d0496fc079df87a96580febb39ddf52e801d46df8301f5f83bf1eb |
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