MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript, which is a common technique for initiating malicious actions. The PDF also contains numerous links, many pointing to compromised WordPress sites and disposable hosting, indicating a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
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://media-get.ru/userfiles/files/86746189080.pdf
- http://feriaalainversa.com/uploaded/files/59602803456.pdf
- https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d3ea0a4ff01---mizezu.pdf
- https://imapcb.org/wp-content/plugins/super-forms/uploads/php/files/97g82luauriri2gk7lor53j3s6/63625114057.pdf
- http://maquinandoysubastando.com/dleyes/admin/fotos/file/45083959399.pdf
- http://noahmission.org/dataroom/file/ponapawebisegamowora.pdf
- https://yellowstonewildlife.com/mozopoxufu.pdf
- http://orderleesushi.com/uploads/files/kosuposifuwuxifipa.pdf
- http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c568886b403---85637875532.pdf
- https://alnahamgroup.com/userfiles/file/sivebifo.pdf
- https://sfasg.jp/js/ckfinder/userfiles/files/86799461045.pdf
- http://www.grupohk.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160791725daab8---xowagofon.pdf
- http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a42275b1370---sumaxedo.pdf
- https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160f39d5f38b59---62320556842.pdf
- https://digiconelectronics.com/media/juvox.pdf
- http://xn----8sbaqfskngn1qi.xn--p1ai/userfiles/file/fasuguj.pdf
- http://mesterek.net/tmp/39655228313.pdf
- http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611d21927271e---lolowike.pdf
- http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f2d9dc67e7---71039146375.pdf
- http://mattstergamer.com/wp-content/plugins/super-forms/uploads/php/files/m3jh8camtdcko509dt7gem20su/taromagalegaz.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=pdf+video+support
- 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_off0000d7e8.bin70b623c5e4e0825f07c8447ff980ebd9bad53f108b42818fe5a9aca91407251e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD7E8 | 10348 bytes |
font_01_sfnt_off0000ef76.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF76 | 16792 bytes |
font_02_sfnt_off00010788.binafbd35c0bc09528da82e207b9fde30bcfc32f9ca3380a9cb33ded3133b5e43a9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10788 | 19172 bytes |
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