MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The file contains numerous embedded URLs pointing to compromised websites and disposable hosting, suggesting it is part of a link farm designed to redirect users to malicious content. The presence of PDF-specific heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' reinforces this assessment. While no scripts were explicitly extracted, the nature of the embedded URLs suggests a phishing or malware distribution scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
Heuristics 6
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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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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://allytemp.ru/uplcv?utm_term=six+minutes+in+may+pdf PDF link annotation
- https://kentacademymiango.com/userfiles/file/40200731166.pdfIn PDF document text
- http://nsfeed.com/_UploadFile/Images/file/zubugojolimabosital.pdfIn PDF document text
- https://diamond-marketing.cz/soubory/15714703885.pdfIn PDF document text
- https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/fpvlktff9m9n2ndbqnjvecvlfg/samivajenereko.pdfIn PDF document text
- http://www.schule.havonix.com/ckfinder/userfiles/files/97857473780.pdfIn PDF document text
- http://aokisuper.com/ckfinder/userfiles/files/38575452690.pdfIn PDF document text
- https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/ff12892a9d7f84f2ac0964ea7f64fcc3/tupijidixajupopar.pdfIn PDF document text
- https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/30c38e9a7f647737b4e5cc5258c6cbe2/selugulox.pdfIn PDF document text
- https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136c7cd664c4---7017260962.pdfIn PDF document text
- http://detskaoptika.cz/ckfinder/userfiles/files/6160658503.pdfIn PDF document text
- https://saikekanglun.com/filespath/files/20210907062519.pdfIn PDF document text
- http://myslizdrave.com/soubory/18870542398.pdfIn PDF document text
- http://originalavto.ru/userfiles/file/gelax.pdfIn PDF document text
- http://educasters.co/ckfinder/userfiles/files/busefolo.pdfIn PDF document text
- http://sameiroeventos.pt/ficheiros/sobanowijasubane.pdfIn PDF document text
- http://erfaspot.com/resimler/files/45468803413.pdfIn PDF document text
- https://kaisar168.com/contents/files/37525610143.pdfIn PDF document text
- http://whatdwellswithin.com/file/59522022130.pdfIn PDF document text
- https://afayl.com/userfiles/file/3768094403.pdfIn PDF document text
- http://ukonlinedirect.com/userfiles/files/mowafizepaw.pdfIn PDF document text
- http://hart-metale.pl/gimnazjum/userfiles/file/turunosepef.pdfIn PDF document text
- http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161317dfdbe336---parebaf.pdfIn PDF document text
- http://yuemeism.com/uploadfiles/files/pewifirobexit.pdfIn PDF document text
- http://kfoodntea.com/dataroom/file/87153195059.pdfIn PDF document text
- https://bibonatura.com/ckfinder/userfiles/files/miweduxifefoziv.pdfIn 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://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_off0000b3fd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB3FD | 15452 bytes |
SHA-256: c15f11646a237bd73836cdbc91c72f4d35667279a8c22de6a4fccc1050cd5748 |
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font_01_sfnt_off0000daf2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDAF2 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000f309.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF309 | 10784 bytes |
SHA-256: a65d335d021caca9ebdf915ed81b82f498bd0cf3c9fbe225d6c785981c4628ad |
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