MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristic analysis indicates it functions as a link farm, directing users to multiple potentially compromised websites. The presence of numerous external URIs, many hosted on disposable domains or compromised CMS uploads, strongly suggests a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
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 http://horvathortho.hu/tmp/kifanaxinabesixuzubazore.pdf In PDF document text
- http://hometextiles-consultant.com/ckfinder/userfiles/files/xepovivurujuvulujiker.pdfIn PDF document text
- http://cnsgawefgl.netsociality.com/upload/files/tutulebenemusedabidaka.pdfIn PDF document text
- http://ecohost.ru/pics/images/file/zijulonetewekesimap.pdfIn PDF document text
- http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614b503b36389---lotavuzoke.pdfIn PDF document text
- http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16130aaf5ccbd1---lexebaxawuwawazodin.pdfIn PDF document text
- http://ei-windykacja.pl/upload/file/82094118825.pdfIn PDF document text
- http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/1614998142e149---pubifuvidafilafa.pdfIn PDF document text
- http://www.huescalamagiaenfotos.com/userfiles/files/jugipuforitin.pdfIn PDF document text
- http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16144b5c58fd3f---dodetidolixuxazaximi.pdfIn PDF document text
- http://hueide.com/upload/files/riduz.pdfIn PDF document text
- http://gnatowski.pl/attachments/file/pumajukexuredanaxosofu.pdfIn PDF document text
- https://congthuonghotel.vn/app/webroot/files/images/pages/files/10125923878.pdfIn PDF document text
- http://kastely-vacduka.hu/fileok/file/gukiruga.pdfIn PDF document text
- https://marlin-aquarium.ru/ckfinder/userfiles/files/85803999343.pdfIn PDF document text
- http://optimaglobal.net/ckupload/files/vipetojolujujuxuwutelu.pdfIn PDF document text
- http://yugang360.com/upload_fck/file/2021-9-15/20210915174844192107.pdfIn PDF document text
- http://farmaciafoglia.eu/userfiles/files/86500742375.pdfIn PDF document text
- https://duongthuy.net/userfiles/file/xojimeno.pdfIn PDF document text
- http://zamdq.com/filespath/files/20210904012700.pdfIn PDF document text
- https://dollarplus98.com/images/upload/files/83563261669.pdfIn PDF document text
- https://mimpiindah1.com/contents/files/xatenilapo.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=android+tv+close+appsPDF link annotation
- 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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000afdf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAFDF | 17336 bytes |
SHA-256: 345baa992d7d725ad9fc3f505b72a8a9c61f12798791bda532da56462130b1bc |
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font_01_sfnt_off0000dba9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDBA9 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000f3c0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF3C0 | 10556 bytes |
SHA-256: 0dad21e31f6aec1decb88efc651cf1505c1540c255123ec9c5efa191ca79e9e0 |
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