MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The ML classifier and ClamAV detection strongly indicate malicious intent. The PDF contains a link farm directing to multiple URLs, several of which are hosted on compromised CMS upload directories, a common tactic for distributing phishing pages or malware. The document body is unreadable, but the heuristic firings point to a malicious link distribution scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9835
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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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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://nfrostov.ru/upload/files/regonugovokobazotofew.pdf In PDF document text
- https://mdteam.se/ckfinder/userfiles/files/fokamuvipuzowake.pdfIn PDF document text
- https://www.havanasalsa-dance-tours.com/wp-content/plugins/super-forms/uploads/php/files/5f1f19d84bab2bef7e8b37a42a6f3892/pesajuzakomu.pdfIn PDF document text
- http://safeabortionnepal.com/userfiles/file/49966041164.pdfIn PDF document text
- https://www.ogblfrontaliers.fr/wp-content/plugins/super-forms/uploads/php/files/977b86v3bnn8k2hcfo9qsbrd2g/54437288222.pdfIn PDF document text
- http://liyangah.com/Upload/file/92867949214.pdfIn PDF document text
- http://www.climatisur.com/ckfinder/userfiles/files/sexedeli.pdfIn PDF document text
- https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/265fc1d504f31c7135290710ecfadc7b/99279309693.pdfIn PDF document text
- https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/838fe905bd837317e7cfd4e2a75d0e73/nifepobugudepazijinel.pdfIn PDF document text
- https://themodernla.com/wp-content/plugins/super-forms/uploads/php/files/c5c7a372dd08e06d3238af743970dccd/50518864725.pdfIn PDF document text
- https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/utm52nbqf0dqc85m26rl4u8k97/91208425335.pdfIn PDF document text
- https://teenvolunteer.org/wp-content/plugins/super-forms/uploads/php/files/897b1db00d8b278aa05859c54f523ec0/kesonifika.pdfIn PDF document text
- http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160c28f09a1fcb---53262232211.pdfIn PDF document text
- https://pristineleather.com/userfiles/file/75544422530.pdfIn PDF document text
- http://preserveproperties.com/userfiles/files/sosibexo.pdfIn PDF document text
- http://www.associatedomains.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079cedb57215---86203783193.pdfIn PDF document text
- https://i3mit.com/shopadmin/upload/files/zugevefoxil.pdfIn PDF document text
- https://www.northernillumination.com/wp-content/plugins/super-forms/uploads/php/files/4971bf5ef1bf2ae384bf21f21a2f269e/78118838397.pdfIn PDF document text
- https://www.actionconstructionjax.com/wp-content/plugins/super-forms/uploads/php/files/48971a418d1c84ce916fe16c2256cfb3/mawoxivolurore.pdfIn PDF document text
- http://townsendrogersfamilyreunion.com/clients/9/91/912616e09393d205379ff76530a10a1f/File/pugafunili.pdfIn PDF document text
- https://tourgardan.com/basefile/tourgardancom/files/5403805372.pdfIn PDF document text
- http://lovellreunion.com/clients/4/42/420738e4954c29d3cfd02fdb1bc9139f/File/49043645837.pdfIn PDF document text
- https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/d295cc385fcd2aec22ac47a4c3f677ea/gawebugo.pdfIn PDF document text
- http://www.siscbolivia.com/admin/uploaded/fck/file/nujawugejodedonigew.pdfIn PDF document text
- http://architects-desk.com/uploadsfile/rikebedutijila.pdfIn PDF document text
- https://parquesanalbertohurtado.cl/ckfinder/userfiles/files/38866837350.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=how+long+is+a+lap+pool+in+yardsPDF link annotation
- 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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f6de.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF6DE | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00010ef0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10EF0 | 16888 bytes |
SHA-256: 456622adf1cbd37db7d1abd8deb2a3c9b317849f2a52066d19b1a146a8dc2e37 |
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font_02_sfnt_off00013ac9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13AC9 | 10528 bytes |
SHA-256: 243584e4dccf1ec44888773840489313a354701660d64d961bfa44b9c8cbd03b |
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