MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file flagged by ML classifiers and ClamAV as malicious. It contains embedded JavaScript and numerous external URIs, many of which are part of a link farm hosted on potentially compromised websites. The presence of embedded JavaScript suggests an attempt to execute malicious code within the PDF viewer, while the link farm likely serves as a lure for phishing or further malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9970
Heuristics 7
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://bjavc.com/filespath/files/20210913190657.pdf In PDF document text
- http://antonellascarpittadesigner.it/userfiles/files/91839564457.pdfIn PDF document text
- https://baptistfriends.org/media/vewuloso.pdfIn PDF document text
- http://torby.kbo.pl/ckfinder/userfiles/files/wazagim.pdfIn PDF document text
- https://lifo-sea.com/ckfinder/userfiles/files/reguzejunugot.pdfIn PDF document text
- http://pescepiana.eu/userfiles/files/17820549203.pdfIn PDF document text
- http://omni-links.com/images/blog/file/ribaburiratikirokal.pdfIn PDF document text
- http://apart1day.ru/file/85553428351.pdfIn PDF document text
- https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/0d4dac33ad021ce7a05ed9d765dc2b99/96967545549.pdfIn PDF document text
- http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613aab43bb5e6---55263553504.pdfIn PDF document text
- http://esistore.com/userfiles/file/61712024583.pdfIn PDF document text
- http://studiobaldizzone.com/userfiles/files/wifutiduzisojifokavefumo.pdfIn PDF document text
- http://xn--80aguejfegacgj0ad.xn--p1ai/pict/file/veromarabu.pdfIn PDF document text
- http://kaizousha.com/js/upload/files/884070175.pdfIn PDF document text
- https://lamaisonducoeur.ca/upload/editor/file/kakediwonopi.pdfIn PDF document text
- https://readxyz.com/wp-content/plugins/super-forms/uploads/php/files/6e84edd5927e9db11e52dd5034c0bfe6/90061163071.pdfIn PDF document text
- https://adoz.cz/ckfinder/userfiles/files/pugezuzagufa.pdfIn PDF document text
- http://adacu.org/userfiles/file/20210906160923.pdfIn PDF document text
- http://gibisch.biz/files/files/pikujasazari.pdfIn PDF document text
- http://ggmtc.net/userfiles/files/kifujolopub.pdfIn PDF document text
- http://archiw.gbpopatowiec.pl/img/upload/files/sokawanuvunuzal.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=how+to+find+dead+android+phonePDF 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_off0000e252.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE252 | 17620 bytes |
SHA-256: 9a9b230724958e98ea92817cdcb822b8c5476a7677a258c9c2fefde9419d6991 |
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font_01_sfnt_off00011070.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11070 | 10456 bytes |
SHA-256: 5951b6c97e44e62d846336fa100fabd26a13ed2fc0e1f83c836824466b7e4ce4 |
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font_02_sfnt_off00012814.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12814 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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