MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript, which is often used to redirect users to malicious sites. Heuristics indicate it functions as a link farm, with many URLs pointing to disposable hosting or compromised WordPress sites, suggesting a phishing or malware distribution attempt. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9933
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 http://yangs-ns.com/ckfinder/userfiles/files/20210528014359.pdf
- http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/e6410ea9e868e9538531941eb57fab75/52294747578.pdf
- http://shukokai-voves.fr/userfiles/file/dobibituwukaxegan.pdf
- http://hoangnamjsc.com/upload/files/42263388264.pdf
- https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/4bee2834a6775dc1ad6737f8b89ff69a/90125448431.pdf
- https://gpuhub.net/wp-content/plugins/super-forms/uploads/php/files/sb5tbe9hd6i05j9d1r2dnoegjm/30934185561.pdf
- http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/568d174d5eb5251ed23f9a72e4cb39db/jetikojagex.pdf
- http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abc3ceb065f---49606610484.pdf
- http://accessiblevehicleservices.com/userfiles/file/8444371921.pdf
- https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/7521747b3dd326ad6a8279e10d1fa8cc/vuxolarav.pdf
- https://sgdivorcelawyers.com/wp-content/plugins/super-forms/uploads/php/files/27979615e966f880ac7c74bdb7be98c9/49327184323.pdf
- https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/686edb54bb1e3e5981cc6b2f414ba24d/vefuniwuwugix.pdf
- https://omomediacion.com/wp-content/plugins/super-forms/uploads/php/files/c6b98e63f8543aa3be8315497a559abe/lesezitumetanadepamemun.pdf
- http://www.companyforte.com/imagenes/editor/file/xuvirivopoxotanalimitat.pdf
- http://garageanything.com/js/upload/files/xadedaxuwi.pdf
- https://masihpt1.com/contents//files/sejosugon.pdf
- https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d33e132af51---13207624292.pdf
- http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b3b7d1b8ebf---kobezevibadipo.pdf
- http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ad75e5dee30---62673342535.pdf
- https://juvelyrikoscentras.lt/Files/file/zadezepugewovatelemo.pdf
- http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/9c348d1a6a3a57c35eec4485d274b8d4/42448968337.pdf
- https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/8fa1abe48227da4b836cbb75382f7fcd/59449724344.pdf
- https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ef657e4ebf---56547610034.pdf
- http://rockpapersun.com/upload_mce_image/file/46240482164.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=buffy+the+vampire+slayer+and+angel+watch+order
- 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_off00015050.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15050 | 16792 bytes |
font_01_sfnt_off00016867.bin96ab1c9ec8d0ea13086e5f4fb60c5506cc8ad229b71d1d019f3119cee40eda10 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x16867 | 11484 bytes |
font_02_sfnt_off00018345.bin3c9d027e4c4e457a98bcebe5c3dbc5799609103b1f9d6505dd909023a2621836 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x18345 | 18816 bytes |
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