MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a link farm pointing to numerous domains, many of which appear to be compromised or disposable hosting. Heuristics indicate these links are designed to lead users to other PDF files, suggesting a chain of redirection for phishing or malware delivery. The ML classifier and ClamAV detection strongly indicate malicious intent.
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://esz.jp/img/editor/files/zuxabozebusanuvoligap.pdf In PDF document text
- http://aitrans.cn/UploadFile/file/F1202109160706503971.pdfIn PDF document text
- http://ceramkgres.ru/userfiles/file/poliwejabuzomivanik.pdfIn PDF document text
- http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16166427932cf7---dumetikelifasu.pdfIn PDF document text
- http://alidongdong.coco1490.com/upload/file_folder/file/jukavumevufasafepegupofu.pdfIn PDF document text
- http://chocoenglish.com/_UploadFile/Images/file/19927501211.pdfIn PDF document text
- http://dichvumucin.com/upload/ckupload/files/90674378280.pdfIn PDF document text
- http://www.jucadent.es/ckfinder/userfiles/files/6977346806.pdfIn PDF document text
- http://przychodnia-felinskiego.pl/uploads/editor/file/85115828872.pdfIn PDF document text
- http://dakmet.pl/upload/13661102361.pdfIn PDF document text
- http://lussoleathertiles.com/test4/EDITOR/example/v2/userfiles/file/24139955247.pdfIn PDF document text
- http://draftingfloorplan.com/ckfinder/userfiles/files/73020004234.pdfIn PDF document text
- http://geo-equipe.it/userfiles/files/pamif.pdfIn PDF document text
- https://www.fangjin.org/ckfinder/userfiles/files/83730854765.pdfIn PDF document text
- http://protok.pro/upload/files/mafowupetudefowanitutejan.pdfIn PDF document text
- https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/1616648bf9a113---37825946843.pdfIn PDF document text
- http://year-c.com/upload_fck/file/2021-9-26/20210926044857926986.pdfIn PDF document text
- https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/ibjdneni5bal51sha7g6r935k4/43877836194.pdfIn PDF document text
- https://mahanakhon.pacedev.com/ckupload/files/39150190861.pdfIn PDF document text
- http://zenkatsu.dk/files/83262849647.pdfIn PDF document text
- http://cegled.varosom.hu/userfiles/files/kejupupop.pdfIn PDF document text
- https://www.notusweb.com.br/ckeditor/ckfinder/userfiles/files/fikigixogerenoxod.pdfIn PDF document text
- http://kolbiko.com/images/uploads/file/22072679793.pdfIn PDF document text
- http://farmaciafici.com/userfiles/files/losapoma.pdfIn PDF document text
- http://blueleaves.ru/userfiles/file/dinogovalepigisetotiv.pdfIn PDF document text
- https://feedproxy.google.com/~r/Gsjc/~3/tgwjJlsMqHc/uplcv?utm_term=human+psychology+books+in+hindi+pdfPDF 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_off0000df0b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF0B | 20576 bytes |
SHA-256: 8a6cd1bcc6ebf90e16c802fbf8a6ed6c25c5131d31bd24fb219dcd9f66401d6a |
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font_01_sfnt_off00011375.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11375 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00012b8c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12B8C | 11176 bytes |
SHA-256: c5b79d286c4bd784eb0b1280584bfaf66d9a59fd19bdace6e2b813fe5c7b6139 |
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