MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The sample was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to various domains, many of which appear to be compromised or disposable hosting, suggesting a link farm or redirection mechanism. The presence of PDF-specific heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' further supports this. While no scripts were explicitly extracted, the nature of the embedded URLs and the detection names imply a malicious intent to redirect users to harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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=how+to+see+someones+private+instagram PDF link annotation
- http://marikitaberbagi.com/userfiles/file/37867057682.pdfIn PDF document text
- https://andana.us/files/files/36776728209.pdfIn PDF document text
- http://azizavacanze.com/userfiles/files/28451636081.pdfIn PDF document text
- http://nakamurasangyou.jp/app/webroot/uploads/files/zegukuxipofe.pdfIn PDF document text
- http://www.mediacomriccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613fedf2999b7---fidamozomoj.pdfIn PDF document text
- http://studiovalecchi.it/userfiles/files/wabivizisukuzonupigipaw.pdfIn PDF document text
- https://bushregenerators.net/userfiles/files/51489099954.pdfIn PDF document text
- https://kermanrooz.com/img/files/79896261.pdfIn PDF document text
- http://thomas-zigon.de/images/file/lemulagewisa.pdfIn PDF document text
- http://mybed.tw/uploads/files/202109052033326141.pdfIn PDF document text
- http://portaldeaquidauana.com.br/ckfinder/userfiles/files/13707624800.pdfIn PDF document text
- https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161404a9a4997e---12627661929.pdfIn PDF document text
- http://say-international.eu/userfiles/file/mowadegujinosotemimetot.pdfIn PDF document text
- https://encoyun.com/calisma2/files/uploads/xasiwodolaratezik.pdfIn PDF document text
- https://getlovebooks.com/wp-content/plugins/super-forms/uploads/php/files/8cd483ff562e6c016ef65af60a800bfa/gerataso.pdfIn PDF document text
- http://tianlanip.com/filespath/files/20210901112946.pdfIn PDF document text
- http://dienlanhtruongson.com/upload/files/92369826367.pdfIn PDF document text
- https://52fantasies.com/home/holly/public_html/ckfinder/userfiles/files/buganomex.pdfIn PDF document text
- http://15441707.com/data/board/file/20210910011944.pdfIn PDF document text
- https://www.burnat-provins.ch/ck/ckfinder/userfiles/files/vavipomuvulomukudetegosu.pdfIn PDF document text
- https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/6009v9r1e4de54b52c3f5nqo68/73603682260.pdfIn PDF document text
- http://abwhopewell.com/uploads/files/32253516924.pdfIn PDF document text
- https://www.horisunmauritius.com/wp-content/plugins/super-forms/uploads/php/files/bafee2513dd3feb1342624a982059192/9944499583.pdfIn PDF document text
- http://profitoolinfo.ru/ckfinder/userfiles/files/25368990958.pdfIn PDF document text
- https://ximatinhdongnai.com/app/webroot/files/images/pages/files/97316121759.pdfIn 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://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_off0000b6c7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB6C7 | 14664 bytes |
SHA-256: d27256b47c55e3dc9bdbc0489dfae4e3e6aee9867b6fcb4ea0136f9ce12af15f |
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font_01_sfnt_off0000dbb7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDBB7 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000f3ce.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF3CE | 10692 bytes |
SHA-256: 4936dc8e99392c7068e7f68fcbe4c970248e184ff8672de4635a06eb4acf8c87 |
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