MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
T1059.007 JavaScript
This PDF document employs a social-engineering tactic by presenting a lure to install a browser extension or update, a common method for credential theft or malware delivery. The presence of numerous external URLs, many pointing to compromised WordPress sites, suggests a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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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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://laborke.ru/uplcv?utm_term=mkv+to+mp4+converter+app PDF link annotation
- http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/b92ba26c4e49f66aa92d376d1d12ff3b/69228557204.pdfIn PDF document text
- https://aiwatopup.com/ckfinder/userfiles/files/49161138633.pdfIn PDF document text
- http://ip-golubev.ru/ckfinder/userfiles/files/kawadokop.pdfIn PDF document text
- https://www.propertyfilevault.com/wp-content/plugins/super-forms/uploads/php/files/ba155f3b2f2f2d32e1229cbcdbb1d97a/77558407385.pdfIn PDF document text
- http://balogmihaly.hu/UserFiles/file/bosusomefamixaruruwav.pdfIn PDF document text
- http://lifemartrealestateconnect.com/wp-content/plugins/super-forms/uploads/php/files/msve371gk4i7es7qo900s7o467/58339389698.pdfIn PDF document text
- http://www.nowsingapore.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/1607595b0c31cc---lodurepebesawodug.pdfIn PDF document text
- http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/adddf49ebf22f2f8f0c96c5d1cc07ddf/gidifaburesizupuz.pdfIn PDF document text
- https://avis-medical.ma/wp-content/plugins/super-forms/uploads/php/files/6453b011a76f4c25e2e67262d5a35395/30196000713.pdfIn PDF document text
- https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/96c311c3b3d18087e546c54120054122/kisuvekaboxezivemuli.pdfIn PDF document text
- http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608f23413c5ea---wemedowonesatesexetezuxa.pdfIn PDF document text
- http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/d932b9826ad719c8335c7e618417211d/tineselesofeg.pdfIn PDF document text
- http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/rhqnvola4fndfn21fhs0f9mml3/98221807750.pdfIn PDF document text
- https://erinmillssmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/csse745ai632el3m5e0tp0mkk0/dirasatoxofegebomuda.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e501.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE501 | 5088 bytes |
SHA-256: ad54a202d259cb91849787fbf4ec961fb1b3f15bab76dfab8210e4742183c0d4 |
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font_01_sfnt_off0000f654.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF654 | 10392 bytes |
SHA-256: 010d9e4c0e4d61738e472f876e203c5e72cc919518bf635d620b748a9f702d7f |
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