MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript, which is a common technique for executing malicious code within documents. The numerous external URLs, many hosted on compromised WordPress sites or disposable domains, suggest a link farm designed to redirect users to phishing pages or download further malware. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly supports a malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9930
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://crewmak.ru/uplcv?utm_term=best+contemporary+romance+writers
- http://finalstage.biz/js/upload/files/gifepeludafovukul.pdf
- https://ksuskalology.com/images/file/95685725771.pdf
- https://useoneconvo.com/wp-content/plugins/super-forms/uploads/php/files/698b744a01d1c6d455454551588aed22/nomebibofemuviwarasaru.pdf
- https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/deeeod7kk9pbbfhj0akbvm56pr/47010393310.pdf
- http://medicaldistri.com/ckfinder_files/files/mitorurijipisez.pdf
- https://singaporenotarypublic.com/wp-content/plugins/super-forms/uploads/php/files/b1055fed3d369b21fa7305526b8b5f12/34725610787.pdf
- http://amidoux-peintures.com/ckfinder/userfiles/files/rimimajefokemipaliwixokad.pdf
- http://ankaser.com/userfiles/file/nupetupupojos.pdf
- https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/p69r5hhlldbatimgul4mdfgiug/95615251714.pdf
- http://nuyewpilot.academy/wp-content/plugins/super-forms/uploads/php/files/9ecc42485d375acb541c1768cf8bed6d/xurofozepafodufe.pdf
- http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/1608d941478a87---xexafisizexu.pdf
- https://healthmatters.me/userfiles/file/60758870709.pdf
- http://sport-way.ru/img/file/31674564938.pdf
- http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16083f10bea8ba---rejemowopipexuxukopa.pdf
- http://www.ellisrasbetonwerke.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160803443dd01f---gezozekisafalusajaxaxuj.pdf
- http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a25aad59aff---26302920156.pdf
- https://www.electriclighting.com/wp-content/plugins/super-forms/uploads/php/files/6976b9df6ebe199fa69305945ed61308/lamoxajefu.pdf
- http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607740f40b8e7---wubolarateg.pdf
- http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/fs33ei7p2u8se1mmes4i5da1b7/besikovel.pdf
- http://thanuyentea.com/ckfinder/userfiles/files/dodaveluxubux.pdf
- https://prosperitas.be/data/assets/file/21373964906.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00011c48.bin8a2af7731799a0577986050fa8f518429811a5854e0ee44777900d055367fd80 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C48 | 17644 bytes |
font_01_sfnt_off000149ad.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x149AD | 16792 bytes |
font_02_sfnt_off000161c4.bind9058c8a7d65441982f08bdae92056f521f72bb30c221eb16de5bb85ad148e2c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x161C4 | 10744 bytes |
font_03_sfnt_off00017a92.binf0eae9b70ff69e0fa6db91a3fcb96daae2b40c1a587ce4401cb64aa8a86ae329 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x17A92 | 16664 bytes |
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