MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a large number of links pointing to external, potentially compromised websites. Heuristics indicate this is a link farm designed to distribute other malicious files, likely as part of a phishing or malware campaign. The ML classifier and ClamAV detection strongly support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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://krisoc.ru/uplcv?utm_term=screen+auto+apk+download PDF link annotation
- http://bjaimama.com/data/upload/2021/09/file/202109032307036472.pdfIn PDF document text
- https://soswzgierz.pl/web/uploads/files/97621413123.pdfIn PDF document text
- https://total-sport.pl/img/upload/files/67676395853.pdfIn PDF document text
- http://nokianhakkablue.ru/ckfinder/userfiles/files/lelexaxigizidegenuwi.pdfIn PDF document text
- http://ff-engineering.com/userfiles/files/doxelokozigozaxojado.pdfIn PDF document text
- http://jyjwqj.com/uploadfile/file///2021092022501291.pdfIn PDF document text
- http://xn--80aafmoni2biho.xn--p1ai/admin/ckfinder/userfiles/files/48322509158.pdfIn PDF document text
- http://jjw-led.com/userfiles/file/22271667940.pdfIn PDF document text
- http://pusancard.com/userData/board/file/garituro.pdfIn PDF document text
- https://inoxquochoang.com/app/webroot/files/images/pages/files/30171305370.pdfIn PDF document text
- https://epgeptech.hu/ckfinder/userfiles/files/57958100806.pdfIn PDF document text
- https://www.auditek.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1613d75b1c38ef---2072689163.pdfIn PDF document text
- http://xiangzhuan.tw/upload/files/97868017484.pdfIn PDF document text
- http://owv-sad.de/userfiles/files/sazaxofuxusomosovabi.pdfIn PDF document text
- https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/qo819aqqfa8fd06fd9p3jvrkid/kuwumuzenefegakozu.pdfIn PDF document text
- http://automyjka.pl/automyjka.pl/userfiles/file/xodosila.pdfIn PDF document text
- https://gaadalagi.com/contents/files/rufugepejosifegidi.pdfIn PDF document text
- http://harposwebdesign.nl/app/webroot/files/userfiles/files/mujutavevitaweto.pdfIn PDF document text
- https://martan.es/cenavarra_userfiles/files/90332375244.pdfIn PDF document text
- http://saluteebenesseresas.it/userfiles/files/43293710293.pdfIn PDF document text
- https://cfbadalona.net/ckdata/files/giledovivonawebimemedaxe.pdfIn PDF document text
- https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613ada4bc1a00---20532374628.pdfIn PDF document text
- https://vietnam-pump.com/userfiles/file/37852989451.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_off0000b723.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB723 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000cf35.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCF35 | 18372 bytes |
SHA-256: 13f927488c7d83878c7181a5e0ffc3febfac98f782766beea414cf865fede522 |
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font_02_sfnt_off0000fdd4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFDD4 | 10600 bytes |
SHA-256: 5869f83c7a96c83d29625014ae12a9d5c7dc03f21b08354d22ab97afaddf1450 |
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