MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous external URIs, many pointing to compromised CMS upload storage, suggesting it's part of a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics strongly suggest a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
Heuristics 6
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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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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://ketchas.ru/uplcv?utm_term=10th+class+home+science+book PDF link annotation
- https://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/9443b37e5344452b1be7b8720329d7fa/54378504721.pdfIn PDF document text
- http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160aa56cc64169---nuvexasoxegojonati.pdfIn PDF document text
- http://workcoop.org/fckeditor/userimages/file/20210613220826.pdfIn PDF document text
- https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607aab323bf88---97823534255.pdfIn PDF document text
- http://novafish.it/userfiles/files/15346632903.pdfIn PDF document text
- https://jetzterstrecht.hamburg/wp-content/plugins/super-forms/uploads/php/files/qactnbqgc3d9fvekdp19tgqm2k/megetuxojurofevug.pdfIn PDF document text
- http://jyjwqj.com/uploadfile/file///2021061721542078.pdfIn PDF document text
- https://stcc-sa.com/motakamel/Ups/files/63905324598.pdfIn PDF document text
- https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/ifg1svauugpkufl8sj0ovrom1o/92804810345.pdfIn PDF document text
- https://mimpishio1bet.com/contents//files/kemijemavewopirebuzilune.pdfIn PDF document text
- http://www.gesas.it/media/mailinglist/file/70041438295.pdfIn PDF document text
- https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/k23ocfcn1rilojshae5b2cv3d5/11458379633.pdfIn PDF document text
- https://aadhaarretail.com/administrator/imagetemp/file/12554369514.pdfIn PDF document text
- https://dacoma.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c8def516c7b---wudasozozenegeduju.pdfIn PDF document text
- https://www.wikiwebagency.it/wp-content/plugins/super-forms/uploads/php/files/4942cbfe3c2f645fb27f424070c7a694/sawel.pdfIn PDF document text
- https://accesoriosalmayor.com/images/userfiles/file/64906781597.pdfIn PDF document text
- http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a31dc0d8205---43771250225.pdfIn PDF document text
- http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a6cf6455592---megamenato.pdfIn PDF document text
- https://jfefood.com/wp-content/plugins/super-forms/uploads/php/files/86fb0247f30c9fbc7cbb1088f053fd8c/47848422825.pdfIn PDF document text
- https://mimpishio2bet.net/contents//files/pavilivikazumaxolevunaso.pdfIn PDF document text
- https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076965994768---89359192580.pdfIn PDF document text
- https://studio45.live/wp-content/plugins/super-forms/uploads/php/files/ftfol6d7evie2o7sei4ajvjot2/gagegililo.pdfIn PDF document text
- https://muratay.nl/userfiles/file/jupitejezix.pdfIn PDF document text
- http://beiks.info/public/file/zoturemuzawixuga.pdfIn PDF document text
- http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609ad1cc1786e---bewupojuvezipuzexo.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e43f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE43F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000fc56.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFC56 | 10704 bytes |
SHA-256: 9fbcf47619538308d072862c46ee78113aa1f345d7dd22f7f29d90cbaae840d9 |
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font_02_sfnt_off000114b7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x114B7 | 16768 bytes |
SHA-256: fed4e5f4de79d93ec327524ac8197f3ea868630d1b7f8ae6bb3e6bb8cf2a10d4 |
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