MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The ML classifier and ClamAV detection strongly indicate maliciousness. The PDF contains a link farm hosted on compromised CMS upload storage, suggesting an attempt to distribute malware. The presence of a 'download button' heuristic further supports the lure-based attack pattern. The file likely exploits a vulnerability to execute a payload or redirects the user to a malicious site.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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.isgs.org/wp-content/plugins/super-forms/uploads/php/files/506354c80a30a6cc8ac2685a7fe49818/falefepukovita.pdf
- https://srp-galabau-rostock.de/wp-content/plugins/super-forms/uploads/php/files/ljc0q9gjmbh2av0mnvnvpr11q3/19731246392.pdf
- http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160dbe08b0b07c---60891227145.pdf
- https://ivanda-commerce.hr/userfiles/file/3055331947.pdf
- http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/160dfc0581a428---gavalorama.pdf
- http://rudolphalexander.com/uploads/files/susekov.pdf
- https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/7568a8caf969aed8a23c1d78931754d8/zoxijexanemidek.pdf
- http://curry-box-deluxe.de/userfiles/file/57778543921.pdf
- https://chmelo.hu/sites/default/files/file/tufeja.pdf
- http://lussoleathertiles.com/test4/EDITOR/example/v2/userfiles/file/89369472322.pdf
- http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cf9cc72e43---sulexipidimuzevasadejaku.pdf
- http://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609404288b996---kegejuvis.pdf
- http://ccforum.kr/uploads/file/1623326075.pdf
- https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/4d9591db284fabb93209c5eab45d806a/sejevutovimajodixa.pdf
- http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/160828113ec323---sirazatiluz.pdf
- https://quickonboarding.com/wp-content/plugins/super-forms/uploads/php/files/3be21e082ea29bff7ab9d8364d3dba3b/gagepenodiwexomivo.pdf
- https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/18b7552c95026349e7e71f99b4545241/93639660985.pdf
- http://vivo-mebel.ru/upload/file/46073181277.pdf
- http://pogservice.ru/userfiles/file/2676007767.pdf
- http://tantex.org/tantex/tantexuserfiles/file/38452493901.pdf
- http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c85604f38c1---98484355602.pdf
- http://www.microsinusectomi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160799628f0a0c---78039468452.pdf
- https://reflexlighting.com/wp-content/plugins/super-forms/uploads/php/files/3d681f21e7ae7d2a64d861db33142718/3068405358.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=cm+daily+free+spin
- 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_off0001005c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1005C | 16792 bytes |
font_01_sfnt_off00011873.bin32a836607879d014afc42465c58be232f57c49cd29b3d875bbe686f447028b5a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11873 | 10584 bytes |
font_02_sfnt_off0001308b.bine853582ae821e5be66585db58cccd8a297575099da7e0f10f4e5a22c28c5eb48 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1308B | 17536 bytes |
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