MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains numerous embedded URLs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users to malicious content. The 'wkhtmltopdf' authoring application suggests it may have been generated programmatically for this purpose.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
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 http://dglytbt.com/upfolder/e/files/20210905223413.pdf In PDF document text
- http://bftt.marketsearching.com/upload/files/51924475887.pdfIn PDF document text
- https://damsindia.org/admin/uploads/file/76173235950.pdfIn PDF document text
- http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/07cd30f88955594aad4ee56091a5645b/72818691755.pdfIn PDF document text
- http://tuzy.pl/Upload/file/sikulosonegemafajusiguxus.pdfIn PDF document text
- http://www.trisad.kz/ckfinder/userfiles/files/nivikesubajirinibanebo.pdfIn PDF document text
- https://ximatinhdongnai.com/app/webroot/files/images/pages/files/vafurag.pdfIn PDF document text
- http://rabotatver.ru/userfiles/admin/96862644071.pdfIn PDF document text
- https://esvigo.com/upload/files/21618008526.pdfIn PDF document text
- http://herbwaterthailand.com/userfiles/files/zigexilefi.pdfIn PDF document text
- https://svenjakretschmer.com/ckfinder/userfiles/files/55418566535.pdfIn PDF document text
- http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161309919d1129---gegemexufefi.pdfIn PDF document text
- https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/8d8ecd507a15be937fffd3d4cec7028e/42144650505.pdfIn PDF document text
- http://kemnhapkhau.com/upload/files/21977074604.pdfIn PDF document text
- https://insolite.lu/img/userfiles/files/25400789265.pdfIn PDF document text
- http://www.sospapa24.com/lib/ckfinder/imgupload/files/92788863429.pdfIn PDF document text
- http://asid.rw/userfiles/file/69756368329.pdfIn PDF document text
- http://wang023spa.com/userfiles/202109file/2021090721022070554.pdfIn PDF document text
- https://delaneyllc.com/ckfinder/userfiles/files/25641954471.pdfIn PDF document text
- http://zhouzhuanx.com/v15/Upload/file/202195153279134.pdfIn PDF document text
- https://resttour.com/images/userfiles/files/37049695688.pdfIn PDF document text
- https://dianthusindustrial.com/resimler/files/1991572773.pdfIn PDF document text
- http://tropo-design.com/ckfinder/userfiles/files/45138817036.pdfIn PDF document text
- http://dealershop.es/userfiles/file/17408793074.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=ultimate+guide+for+arduino+sensors+pdfPDF 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_off0001087c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1087C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00012093.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12093 | 10948 bytes |
SHA-256: ef6859cba4592841ff91e543ca016f2ce09bca6edd82839db4de8ad406647dc4 |
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font_02_sfnt_off000139ab.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x139AB | 18448 bytes |
SHA-256: 4eb58a238b32eaeb6d32819d7dce2f0a6ce8bcc82741072b0a8d949752fc1aea |
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