MALICIOUS
104
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised websites or are part of a link farm. The ML classifier strongly indicates maliciousness. The embedded JavaScript likely facilitates the redirection to these malicious sites, contributing to a spearphishing attachment attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
Heuristics 6
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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://archism.ru/uplcv?utm_term=cell+wall+function PDF link annotation
- http://giorgimpianti.com/userfiles/file/82963987868.pdfIn PDF document text
- http://oguzlarotomatiksanziman.com/depo/sayfaresim/file/28857667457.pdfIn PDF document text
- http://www.painters-restaurant.com/userfiles/file/tazimaxul.pdfIn PDF document text
- http://schubert-hh.de/image/file/jisapagemezinavonis.pdfIn PDF document text
- https://asoriofrio.org/ckfinder/userfiles/files/jasapijan.pdfIn PDF document text
- http://zaragozalawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/42883038579.pdfIn PDF document text
- https://rentcar888.com/uploads/files/202109010458046194.pdfIn PDF document text
- http://handsonmontessoripk.com/userfiles/files/medelesudoxi.pdfIn PDF document text
- http://cosmoscm.com/contents/files/74510237292.pdfIn PDF document text
- https://noitiethoc.com/userfiles/file/86237614385.pdfIn PDF document text
- http://abwbaltimore.com/uploads/files/tesis.pdfIn PDF document text
- https://mimpiindah88.com/contents/files/jikevazoxi.pdfIn PDF document text
- https://prana.video/wp-content/plugins/super-forms/uploads/php/files/arm2vunmg86pk7nkls3c7d50e0/57643219942.pdfIn PDF document text
- https://bike-accessories.supersites.gr/content/ckfinder/files/50124002588.pdfIn PDF document text
- http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/b3cmjcdfr0pgh3p0h49p4g7ik5/pemufowif.pdfIn PDF document text
- https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/4l2ldfckvc1uaqkgl6ibb1i326/tubagobado.pdfIn PDF document text
- http://yer-krasnodar.ru/ckfinder/userfiles/files/bugigobodebigozokumupejox.pdfIn PDF document text
- http://romangruszecki.com/uploaded/file/95604672005.pdfIn PDF document text
- https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/1615b543f711ce---78416361836.pdfIn PDF document text
- http://arserwood.com/js/fckeditor/editor/filemanager/connectors/php/connector.php/upfiles/file/21100315225714799550trpv.pdfIn PDF document text
- http://gwtcs.org/Content/uploads/files/9360957724.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_off0000b4a6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB4A6 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000ccbd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCCBD | 10280 bytes |
SHA-256: b54dde999db31b07097162bd298b05db1585b77433f7b95370c27e9d39b5ac7f |
|||
font_02_sfnt_off0000e40f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE40F | 16064 bytes |
SHA-256: 3d426f525965b68c327e38c81dc7fe092d8b91fb368ef8acd0796b4c773c77be |
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