MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The ML classifier and ClamAV both flagged this PDF as malicious, specifically as a phishing trojan. The document contains numerous links, many pointing to compromised websites or disposable hosting, suggesting a link farm designed to lure users to malicious sites. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports this, indicating a non-clustered link farm on disposable hosting.
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://vstarmp.cn/upload/files/20210808_080712.pdf In PDF document text
- https://tahitotfaluovodak.hu/ckfinder/userfiles/files/moramumafiwofapis.pdfIn PDF document text
- http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160f7330b8f35c---zajawabajosa.pdfIn PDF document text
- http://kondicionery-shodnya.ru/upload_picture/file/pipap.pdfIn PDF document text
- http://mxagproducts.com/upload/browse/file/woxokebotegit.pdfIn PDF document text
- https://keralatemples.info/ckfinder/userfiles/files/zikaziponanizarad.pdfIn PDF document text
- https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c652354a3f---malijamilafunapalofosu.pdfIn PDF document text
- http://arci-mp.fr/admin/File/nufavasizawenakilap.pdfIn PDF document text
- http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/d2669865912da3a97660045adaca06e5/vunowagoxuwumiruj.pdfIn PDF document text
- http://softwarefactory.nl/images/file/muruwa.pdfIn PDF document text
- https://ebooksweb.net/files/file/fesifuwotuloxulukox.pdfIn PDF document text
- https://ksmt.edu.np/assets/ckfinder/userfiles/files/wutudosedomasubawi.pdfIn PDF document text
- http://enerjipiyasalarizirvesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d70afdd7deb---rilomipusetid.pdfIn PDF document text
- https://fminterativa.net/cms/plugins/ckfinder/userfiles/files/dafatum.pdfIn PDF document text
- http://aksaxena.com/bpms/includes/fckeditor_uploads/userfiles/file/pusawosatemidonufisel.pdfIn PDF document text
- http://riph.pl/userfiles/file/varikosufuk.pdfIn PDF document text
- https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16097c7cad5777---namaloredeboxosovu.pdfIn PDF document text
- http://www.k-24.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cfaaffe110b---xurewovasemunekevo.pdfIn PDF document text
- http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16133f9d188656---kenaxelujubavor.pdfIn PDF document text
- https://www.lowdoc-loans.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16080b3a1570f7---lutizazosup.pdfIn PDF document text
- http://netinflux.net/userfiles/file/kegalakeligolewona.pdfIn PDF document text
- https://ljlconst.com/admin/images/file/kadejupidozijex.pdfIn PDF document text
- http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/0b46e357c394f17c534e301ae3decf63/revixadivizov.pdfIn PDF document text
- http://carnavaldemarbella.com/Senegal_5/Content/files/userfiles/file/75355058262.pdfIn PDF document text
- https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160814c9fe3d7d---25792790886.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=xml+schema+w3schools+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_off0000d439.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD439 | 17244 bytes |
SHA-256: 332cd7be17bb92fa1c399836fab23e7f8f93d8ee0f2519dd89ecb6c26fa4dc98 |
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font_01_sfnt_off000100f9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x100F9 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011910.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11910 | 10756 bytes |
SHA-256: 9bd0341ef0d2d42b0930df3be1f38d096f919f13c4d98620d5d28c8c1918a677 |
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