MALICIOUS
104
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains an embedded JavaScript stream and a large number of external links, many pointing to compromised WordPress sites. The ML classifier strongly indicates maliciousness. The embedded JavaScript likely facilitates the download and execution of a second-stage payload from one of the provided URLs, which are designed to appear as legitimate file uploads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
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://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606f6824a9e78---debenura.pdf
- http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f01741ab7d---mevogulisijavetinilij.pdf
- http://sugarfree-gelato.com/upload/file/xixunizikesaginuvaxur.pdf
- http://everbeenmagnet.com/js/upfiles/files/pomadupiwaredopomabikoni.pdf
- https://santevita-bg.com/ckfinder/userfiles/files/55610700682.pdf
- http://photo-preiss.com/upload_files/files/jutatonemelodebasaboviv.pdf
- http://cupta.org/userfiles/files/20210613225153.pdf
- https://genesislighting.net/wp-content/plugins/super-forms/uploads/php/files/68402cdc9972f0674f1e5feeefff5be2/texoveti.pdf
- http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/8a3043c54efdfb5463057d06312b404f/57328153305.pdf
- http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16075bcf23fcee---kujuwuz.pdf
- https://oneremote.ru/wp-content/plugins/super-forms/uploads/php/files/9ae5208b3f354ef65d096153819756d0/raxozasukegavefo.pdf
- https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/e27df8860c938976647f6bd292395e36/36092254284.pdf
- http://inercial.es/uploads/files/79742172146.pdf
- http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b756e6d79b---42219445167.pdf
- http://harekatmemuru.com/images/Media/files/79869112060.pdf
- http://hitecds.com/userfiles/file/61402112875.pdf
- http://westernmaki.com/uploads/files/8441340384.pdf
- http://keifo.ru/ckfinder/userfiles/files/65206646505.pdf
- http://infrabud.eu/fckpliki/file/giminiruwoxegawot.pdf
- https://omomediacion.com/wp-content/plugins/super-forms/uploads/php/files/e60b9f3abcbd6663ac949623cec95ec9/jasumutefozorakoxik.pdf
- https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/mo3scg1mokt2s6cpehg1op3u7h/39775049436.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=stephen+amell+blue+mountain+state
- 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_off0000fcf5.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFCF5 | 16792 bytes |
font_01_sfnt_off00011507.binf4bcfa4c329a7e982d2ec35854b0754c0498d517abd94d89ebfd0489fcfaa698 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11507 | 17760 bytes |
font_02_sfnt_off00014354.bin62280d8353bdbfb9cc13611dda68f665c9c87da4fe2d8bc3e85189815977dd76 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14354 | 10732 bytes |
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