MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external links, many pointing to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users. The presence of PDF_URI and PDF_SEO_DISPOSABLE_LINK_FARM heuristics further supports this, indicating the PDF's primary function is to host these malicious links.
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://queure.ru/uplcv?utm_term=cub+scout+promise PDF link annotation
- http://pravkniga.ru/files/userfiles/files/39083687946.pdfIn PDF document text
- http://lex-ter.ru/admin/ckfinder/userfiles/files/43326691231.pdfIn PDF document text
- http://danangsculpture.com/uploads/image/files/joxufiwurer.pdfIn PDF document text
- https://dcimx.com/files/82883827096.pdfIn PDF document text
- https://my-natural-style.net/upload/files/73538713396.pdfIn PDF document text
- http://www.leasebridge.com/CKUPimg/files/jijozawokenekosapa.pdfIn PDF document text
- http://studiopignotti.it/userfiles/files/dowopamifawetomowima.pdfIn PDF document text
- https://tunhuaduytan.com/upload/userfiles/files/zalomurivifupifatakima.pdfIn PDF document text
- http://imhome-listings.com/userfiles/files/67461051850.pdfIn PDF document text
- https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/715bb8c7f025e4912fe523b8efb0c16d/93229356343.pdfIn PDF document text
- https://hardlineconstruct.ro/app/webroot/files/userfiles/files/95665245600.pdfIn PDF document text
- https://eguiders.com/uploads/fixemalipi.pdfIn PDF document text
- https://xuanhongkhang.com/upload/files/koxobe.pdfIn PDF document text
- http://runwellconsulting.com/file/file/53144188073.pdfIn PDF document text
- http://drzwiukryte.pl/userfiles/file/xapofup.pdfIn PDF document text
- http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16132f118e3341---77433031824.pdfIn PDF document text
- http://studioguatta.it/userfiles/files/tosomemasubopizumezav.pdfIn PDF document text
- https://mpksieradz.pl/upload/file/92586071809.pdfIn PDF document text
- http://khiconghoixuancong.com/Khicong/admin/userfiles/file/vegawuxepogofodulik.pdfIn PDF document text
- http://mariekevanvlierden.nl/survey/userfiles/files/vuvazoxukokaseku.pdfIn PDF document text
- http://ctkupavna.ru/upload/file/romusof.pdfIn PDF document text
- https://radio-aurea.eu/files/file/xuzoxelojoliwo.pdfIn PDF document text
- https://xyoaa.org/sites/default/files/files/76312953030.pdfIn PDF document text
- http://think6.net/ckfinder/userfiles/files/20210916012406.pdfIn PDF document text
- https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139c632f3be1---seneb.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_off0000c620.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC620 | 10496 bytes |
SHA-256: ec7475b8cf035543abcad1e76608777388a23acc7c23a6408a58867afc94318c |
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font_01_sfnt_off0000dddb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDDDB | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000f5ed.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5ED | 16940 bytes |
SHA-256: 2cc44cad66ca6a25096135269b5603ee8094f754790a89f29194ea291f1cbc26 |
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