MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URLs, many of which are hosted on compromised or disposable domains, suggesting a link farm or phishing lure. The presence of PDF-specific heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' further supports this. Although no scripts were explicitly extracted, the nature of the URLs and the PDF structure implies an attempt to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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://cructi.ru/uplcv?utm_term=montserrat+font+android PDF link annotation
- http://www.gonouvellezelande.com/files/gexifikoxatobup.pdfIn PDF document text
- http://change4best.ru/upload/file/6660003595.pdfIn PDF document text
- https://thietbivesinhanhhuy.com/asset/files/37449193044.pdfIn PDF document text
- https://yocarbroker.com/upload/ckfinder/files/15508451076.pdfIn PDF document text
- http://termosystem.pl/userfiles/file/54165157854.pdfIn PDF document text
- http://istanbulballoons.com/ckfinder/userfiles/files/91962342896.pdfIn PDF document text
- http://moje-stranky.eu/userfiles/file/30500982504.pdfIn PDF document text
- http://thomas-zigon.de/images/file/kenivizoxil.pdfIn PDF document text
- http://pijntherapie.be/uploads/files/64900798916.pdfIn PDF document text
- http://signexpowholesale.com/project-new/christianbook/upload_images/file/jilarideseweleril.pdfIn PDF document text
- http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16131436ae58d7---71660317808.pdfIn PDF document text
- https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/c8d3d49694ffaf299fa9a5ab03cf6f91/pamidal.pdfIn PDF document text
- https://everestart.com/images/stories/file/66984192643.pdfIn PDF document text
- http://anoh.net/pds/userfiles/files/vixijotawilegemunus.pdfIn PDF document text
- http://canxetaianhduc.com/images/file/54633711540.pdfIn PDF document text
- http://motolargo.pl/userfiles/file/14122221848.pdfIn PDF document text
- http://sirindhorn.net/upload/File/27461791545.pdfIn PDF document text
- http://topspeed4wd.com/ckfinder/userfiles/files/wariwosujavepaji.pdfIn PDF document text
- https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/dce4ce6a003eebd3937d8694d65eaae5/31207625429.pdfIn PDF document text
- https://bahceneryaman.net/public/content-images/files/zirodetokudu.pdfIn PDF document text
- http://esistore.com/userfiles/file/kunixamegene.pdfIn PDF document text
- https://hamayeshniroo.com/shop/file/wagibud.pdfIn PDF document text
- https://marjoyunlar.com/calisma2/files/uploads/54495498514.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_off0000def1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDEF1 | 18440 bytes |
SHA-256: 5ca6b4bf81e0cf62417c3006ce95b421a8373d786557793ca805e37d1596eacd |
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font_01_sfnt_off00010f58.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F58 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0001276f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1276F | 10292 bytes |
SHA-256: 370eba22b57019ba292208ea01767860336f4cebc40e757d2ada1cc7373676fd |
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