MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, many pointing to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users to phishing or malware distribution sites. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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=creating+america+textbook+answer+key+pdf PDF link annotation
- https://ibexquimica.com.br/ckfinder/userfiles/files/didokevujuropuderov.pdfIn PDF document text
- https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131aede576e3---diferilewelakuxon.pdfIn PDF document text
- https://konzolstudio.ro/uploaded_files/file/19427734136.pdfIn PDF document text
- http://wordtmann.beckbauer.eu/ckfinder/userfiles/files/gililejosez.pdfIn PDF document text
- https://hotelreviewreserve.com/basefile/hotelreviewreservecom/files/rufabubasoposakokob.pdfIn PDF document text
- https://momsgardenfoods.com/ckfinder/userfiles/files/getanujefadetes.pdfIn PDF document text
- http://villaturri.it/wp-content/plugins/formcraft/file-upload/server/content/files/16151e6cbae790---9705115396.pdfIn PDF document text
- http://ddaengshop.com/ckupload/files/8096446828.pdfIn PDF document text
- http://iglozawiercie.pl/zdjecia/file/30100092026.pdfIn PDF document text
- http://anthonyvienna.com/sites/default/files/file/70819276708.pdfIn PDF document text
- https://tmtteks.com/files/fapudi.pdfIn PDF document text
- http://zygzak.eu/foto_dane/wysiwyg/File/95699985842.pdfIn PDF document text
- https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/htfgevf349kdjkg81efe8pelb1/10721531294.pdfIn PDF document text
- http://qdsenfeng.com/data/files/mebon.pdfIn PDF document text
- http://dc-a0dcf319a153.breakthroughsport.com/userfiles/files/kewuborogumepenenex.pdfIn PDF document text
- https://congtydaihai.com/upload/files/bozinerivu.pdfIn PDF document text
- http://1carl.com/userfiles/file/remebowaru.pdfIn PDF document text
- https://gogift-it.com/userfiles/files/naxukugidiwodakudar.pdfIn PDF document text
- https://pomacanthe-art.fr/imagebeforeafter/files/kupenukuxibat.pdfIn PDF document text
- https://braindevelopmentmaps.org/userfiles/files/moxapov.pdfIn PDF document text
- http://consulcongress.it/uploads/assets/file/febimipinidutijoliruxuzun.pdfIn PDF document text
- https://tinnituskozpont.hu/files/4279178298.pdfIn PDF document text
- http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612e99b32ae80---1408172370.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_off0000aed7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAED7 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000c6ee.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC6EE | 11484 bytes |
SHA-256: dc363da432f086e9f7caa68fb673d4150f42e1e884cadac909c5ff663796075c |
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font_02_sfnt_off0000e1c9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE1C9 | 16140 bytes |
SHA-256: cd9ed05f9eb8284cfa09227c6dbe6be5d2a4e177794d5c68dfea45c30ba1b085 |
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