MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF sample was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. It contains an embedded JavaScript stream and presents a link farm pointing to compromised CMS uploads and disposable hosting, likely to trick users into downloading malware. The presence of external URIs with UTM parameters suggests a phishing or social engineering lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://oniceh.ru/uplcv?utm_term=download+resident+evil+3+android+apk
- http://vencedor.coop/images/admin/file/14113449418.pdf
- https://greenways.at/userfiles/file/25497954759.pdf
- https://abouelhoulgroup.com/userfiles/files/xipusorogizetomokevaz.pdf
- https://athensviptour.com/wp-content/plugins/super-forms/uploads/php/files/cc0abd0d67bea3cecc9d7741287e8412/wibezonifupuluda.pdf
- http://mini-garden.ru/userfiles/file/58748680379.pdf
- https://delphin-restaurant.com/ckfinder/upload/files/95599145915.pdf
- https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613711f1bbfa0---31029220039.pdf
- http://dongamold.com/fckeditor/upload_files/file/96636013313.pdf
- https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161494a879d7ad---jikevapujelokajiwawutil.pdf
- https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/161358127cf0cb---65346696743.pdf
- http://mobilieroccasion.fr/uploads/file/futumitatigoronunatekid.pdf
- http://sino-web.net/filespath/files/20210913165855.pdf
- http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613488938291b---fesafixabegubivuna.pdf
- http://ipsaix.com/ckeditor/ckfinder/userfiles/files/19574054168.pdf
- https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/upljopca1u1ticaa7oae6h35m7/muxutuligalijesej.pdf
- http://jfac.kr/ckfinder/userfiles/files/58386550906.pdf
- http://gunjanjain.com/app/webroot/js/uploads/files/kifisaruruzopadab.pdf
- http://thuaphatlailongthanh.com/upload/contentFile/minhchau/file/729686110.pdf
- http://mclarenquartz.in/ci/userfiles/files/zidiwidotimona.pdf
- https://wmu24.ru/media/file/rugilelinadonaborud.pdf
- https://transmar.biz/ckfinder/userfiles/files/tafuxizawefukuti.pdf
- http://stacjaregeneracja.pl/userfiles/file/dagumowagum.pdf
- https://baigiangtoanhoc.com/upload/files/86879451403.pdf
- http://askaudit.ru/price/vokilimef.pdf
- 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_off0000b412.bin8f2f156f87c81473a4d317a48e77bfb5ab23021e6e8a55cce3142944c0984a84 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB412 | 15808 bytes |
font_01_sfnt_off0000dcb3.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDCB3 | 16792 bytes |
font_02_sfnt_off0000f4ca.bin3b48b11b06df4e283ba96452ee6fdeb97ece8901f7a44e795d25169e75b9f8d5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF4CA | 10804 bytes |
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