MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file contains embedded JavaScript, a common technique for exploiting PDF vulnerabilities or redirecting users. It also features numerous links to compromised WordPress sites and disposable hosting, indicating a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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 https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/1ad852d4b0c56ff79bbae6157cc55d12/86803088811.pdf
- https://matrainagycsalados.hu/userfiles/file/gotabazofufonenaguxezuvus.pdf
- http://sobsai.com/ckfinder/userfiles/files/xekix.pdf
- http://svenstavik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc4e873793f---385245941.pdf
- https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/e6d82502cd09bcd6862ba8da1b4088ec/foripiranopikekinejekulo.pdf
- http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607e1ce4d5db3---regabavozovutosevo.pdf
- http://kaowei.tw/image/files/20210617_030152.pdf
- http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d5aa7b22cea---gonutilofisaxi.pdf
- https://asset-books.com/userfiles/file/gikajegupasevekisi.pdf
- http://app8itebarandgrill.com/admin/images/file/zizaru.pdf
- http://epoch-making.jp/js/upload/files/10129707489.pdf
- http://the-bom.kr/upfile/files/vetejusedisotubapuzeb.pdf
- http://penzionklara.cz/userfiles/file/7058830543.pdf
- http://flirdining.com/uploads/files/58457453094.pdf
- http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609b150f0a91d---buzela.pdf
- https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/d42523907f8cdcf7192c8e3f9217745c/risazupovogujuwo.pdf
- https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/5d41afcb02e87a22a3d3f79e40b02a22/gumigubove.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=anne+frank+interview+questions+and+answers
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00010000.binaa821a3da4a716954fca90f4dcc473d1404a030ac9ab9a5c2a2e3943b4418e6e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10000 | 17636 bytes |
font_01_sfnt_off00012e75.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12E75 | 16792 bytes |
font_02_sfnt_off0001468c.bin3c41db9d24895282eccec0fa172402a9a051ff1a601271b377e429f0110a3a70 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1468C | 10772 bytes |
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