MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs, many of which are hosted on compromised or disposable domains, indicating a link farm designed to redirect users to malicious content. The presence of embedded JavaScript and a high ML classifier score further support its malicious nature, likely for phishing or malware distribution. ClamAV also detected this file as Pdf.Phishing.Trojan.
Machine Learning
- Nyx PDF Classifier malicious score 0.9986
Heuristics 7
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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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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://crysiq.ru/uplcv?utm_term=the+writing+journey+1+pdf
- http://rocb-ap.org/file_media/file_image/file/xugimumovavefulorip.pdf
- http://etepi.pt/js/ckfinder/userfiles/files/40455278811.pdf
- https://la-klamm.org/Files/files/newozafuga.pdf
- https://psg66.ru/admin/ckfinder/userfiles/files/44037716121.pdf
- http://fullx.net/files/juboraberoxotinafup.pdf
- http://oskarmak.com/userfiles/file/95740242938.pdf
- http://neza.cz/UserFiles/File/98737813196.pdf
- https://remont-bez-zabot.ru/files/file/rixeruz.pdf
- http://china-engine.net/ckfinder/userfiles/files/75706134730.pdf
- https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613910ef32841---nipaxeg.pdf
- http://bkmarine.net/ckfinder/userfiles/files/1630755130.pdf
- https://grupa-energia.pl/attachments/file/fufudobagusefip.pdf
- https://optimuselearningschool.aels.edu/learning/site/images/uploadfiles/dinigoxamivitun.pdf
- http://pointerboards.com/uploads/admin/files/96940525420.pdf
- https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613750b080e16---waritujalox.pdf
- http://royalgroup.at/tmp/36548428110.pdf
- http://ulleungroadtour.com/FileData/ckfinder/files/20210907_6467EC46E421D9AA.pdf
- http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c5c1042068---59435465013.pdf
- http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/1612f9b3b2645a---25781123165.pdf
- https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/16133abc35cca8---zefelukirexarukuvawaze.pdf
- http://unicorn-furnitures.com/d/files/73086243145.pdf
- http://yer-krasnodar.ru/ckfinder/userfiles/files/90804664981.pdf
- http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/16135085820905---jolugevedupalasaregeraw.pdf
- 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_off0000d9fc.binfd2c06b90ed6c61699e16ab4214d6eb8b4e7a211d28667f74f3d300468b6063a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD9FC | 17884 bytes |
font_01_sfnt_off00010831.binec3cc3d527bb77090a1e732b55b83197b9e18f61475448bda7cbcb9f6d32c673 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10831 | 10844 bytes |
font_02_sfnt_off00012114.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12114 | 16792 bytes |
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