MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample contains embedded JavaScript, which is a common technique for executing malicious code within PDF documents. It also exhibits characteristics of a link farm, with numerous URLs pointing to compromised WordPress sites, likely serving as a distribution mechanism for further malicious content or phishing pages. The ClamAV detection and ML classifier strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9987
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://fourseasons.events/wp-content/plugins/super-forms/uploads/php/files/f3689f0cbc5f0ccbfb13e2d106fcc175/77837347079.pdf
- http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a23c6bd3160---ginebajowozixirurenowuto.pdf
- https://www.sidertest.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609e3d5312046---88524841798.pdf
- http://ifa-astrologie.de/userfiles/file/jovekuwamebumawerop.pdf
- http://citescolairedeledit.com/include/file/67153094754.pdf
- https://www.actionconstructionjax.com/wp-content/plugins/super-forms/uploads/php/files/a666ce7d6284a58b106c74f0c16a5e2e/kerusaj.pdf
- http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/p9ub5jpufi9i00888onjfeorq3/todox.pdf
- http://ff-engineering.com/userfiles/files/71883334089.pdf
- https://edoxmarketing.com/wp-content/plugins/super-forms/uploads/php/files/66gru3bnuhqm1irt51fs7aljjg/98761294.pdf
- http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/160bcfecb86923---69847399623.pdf
- https://popcouncilinstitute.org/wp-content/plugins/super-forms/uploads/php/files/cb998b443bbb3ec9c83bb66eebce757b/ferufovevusufafupale.pdf
- http://3colorjazz.com/fckeditor/userfiles/image/nizesixixegoregisep.pdf
- https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/160d7ddf82f957---9601360121.pdf
- https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb8bda429ca---62331729748.pdf
- http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1606fb86a5f2cc---fegasugifutirifatog.pdf
- https://vibangnhadat.com/uploads/files/3268170830.pdf
- https://a2designbg.com/userfiles/file/95902819070.pdf
- http://5mal4.de/moneyvidya/web/images/userfiles/file/kipekugijizesiporavo.pdf
- http://kadh.kr/bobod/upload/file/39170998685.pdf
- http://sahamit.net/userfiles/file/runeliropetofakuw.pdf
- https://birgatour.mn/js/ckfinder/userfiles/files/fedenafeguridozuwilewu.pdf
- https://avantkart.com/wp-content/plugins/super-forms/uploads/php/files/jpunsic1ui3to7ucr0tbh1ic35/nagubogufalo.pdf
- https://www.bakirkoytemsilcisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bccdceb835---82226831155.pdf
- http://bwc.lt/i/sulixa.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=el+nino+introduction+worksheet+answer+sheet
- 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_off0000d768.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD768 | 16792 bytes |
font_01_sfnt_off0000ef7f.bin16e06eb48073bce4bab68b0effcec77ed16c4e517329e2f9d5c7bff99f0ecbc0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF7F | 10728 bytes |
font_02_sfnt_off00010823.bin8f6e0778c0a47636b9e0e56f284014a85b90183f1c147cd02d98e49839dee82d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10823 | 16208 bytes |
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