MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded URLs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery via these links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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://dabaizhongxue.com/upload_fck/file/2021-9-8/20210908025008522331.pdf In PDF document text
- http://www.trisad.kz/ckfinder/userfiles/files/rudajoz.pdfIn PDF document text
- http://area100impianti.it/userfiles/files/97714176475.pdfIn PDF document text
- https://ivanamihic.com/files/65059514697.pdfIn PDF document text
- http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/16142565dcc907---32880282281.pdfIn PDF document text
- http://nbc.ua/design/pic/file/bemidugowakazuf.pdfIn PDF document text
- http://autoscuolavalerio.it/userfiles/files/43813090875.pdfIn PDF document text
- http://inhome360.ru/admin/ckfinder/userfiles/files/48593904233.pdfIn PDF document text
- http://gemaeldeundobjekte.de/uploads/files/41865896109.pdfIn PDF document text
- http://standardamulet.com/files/files/fijusena.pdfIn PDF document text
- http://xn--80aa5alfu.kz/file/donepobi.pdfIn PDF document text
- https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/a66e5930fdfe7eeb2fb4a093fbf8d0c9/59350132829.pdfIn PDF document text
- https://nusamulticentralestari.com/Uploads/userfiles/files/junanukowaviwonix.pdfIn PDF document text
- https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/4e1587cc325760b6fe55d5b6e439c6c4/jazuno.pdfIn PDF document text
- https://datxeninhbinh.com/data/dulieu/files/gawemaxamirimamamozegoj.pdfIn PDF document text
- http://tiquital.com/documentos/file/jenasuzizenoxalumi.pdfIn PDF document text
- http://group-anons.ru/userfiles/files/77015947659.pdfIn PDF document text
- https://zbmbudomont.pl/userfiles/file/61283527479.pdfIn PDF document text
- http://markone-tools.com/upload/files/sejuwire.pdfIn PDF document text
- http://trongtinpc.com/luutru/files/55653471372.pdfIn PDF document text
- http://bawaconstructions.com/editorData/file/27820423112.pdfIn PDF document text
- http://dieukhactransam.com/uploads/files/ruboxula.pdfIn PDF document text
- https://unicon-msk.ru/data/files/sorakupalukolikevesamutop.pdfIn PDF document text
- http://bowenlawmt.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/13081110432.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=bus+simulator+apk+androidPDF 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_off0000b243.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB243 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000ca5a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCA5A | 10668 bytes |
SHA-256: 340d95f1d7afc53eefcf288f6930807360feba806bf7f0c472ed96fe559ce1b9 |
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font_02_sfnt_off0000e2cd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE2CD | 14948 bytes |
SHA-256: b7107bffcad16f7d98d50ec57ec6c492aba1a75836acd19fad0442e1fee63a2f |
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