MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and a significant number of external links, many of which point to compromised WordPress upload directories. These links form a link farm, a common technique to obscure the final malicious destination or to distribute phishing lures. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
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://frederickfollows.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16132d39f11585---80375516169.pdf
- http://shengyaweb.com/uploadfile/file/2021090700095460.pdf
- http://daindnc.com/fckeditor/userfiles/file/ruzunivemovovak.pdf
- https://unique.global/wp-content/plugins/super-forms/uploads/php/files/374950f5a64b9bd0bcb3863ec768d7a2/53198480154.pdf
- http://garageanything.com/js/upload/files/xumeziwotibotetosogiz.pdf
- http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614163117d0d0---71382265004.pdf
- http://g-shocktou.com/user_file/file/wetamabumoduwusilatu.pdf
- https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/1613c602b73a75---30871535827.pdf
- http://hamayeshniroo.com/shop/file/komajomukuniwobej.pdf
- http://administratieindex.nl/images/uploads/retokuzuf.pdf
- http://rowerowaszkola.pl/imgturysta/files/daxemaw.pdf
- https://anjingliar2.com/contents/files/95049067170.pdf
- http://xn--22cjbbm2eyae3ehabdb4kqdtae3dxnnc1fhf.com/user_img/files/pulunekawaxavuwaxabij.pdf
- http://metabolit-plus.ru/files/file/xupujebezafakabexegekubek.pdf
- https://vico-real-estate.com/ckfinder/userfiles/files/19595282172.pdf
- https://www.suep.gr/ckfinder/userfiles/files/lixofu.pdf
- https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/161318f7c57d9f---22920283465.pdf
- https://trichynext.com/wp-content/plugins/super-forms/uploads/php/files/ae9672208d9c5821454b14754ae09591/81548552063.pdf
- https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/161481c80809fc---gibelalokomenizeki.pdf
- https://newfrio.com/userfiles/files/96322334620.pdf
- http://dvarenda.ru/upload/file/nokazinojowizetezumuna.pdf
- http://suchanekstomatolog.pl/files/file/69045006666.pdf
- http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161397c027f2de---50786916510.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=prince+of+persia+snf
- 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_off0000d8d6.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD8D6 | 16792 bytes |
font_01_sfnt_off0000f0e8.binb6485da80bc293788da12201d50e32e9f7a8fceef8e4799825895b4128c3d1b4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF0E8 | 18164 bytes |
font_02_sfnt_off00012011.binf784f1472a0758bd3a69f8d62522620547e71a4efcb8132e4bf7697c0a0862ad |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12011 | 10328 bytes |
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