MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. Heuristics identified it as a link farm, with numerous URLs pointing to compromised WordPress uploads and disposable hosting. The primary URL, https://infrive.ru/uplcv?utm_term=zapya+install+download, suggests a lure related to software downloads, likely leading to phishing or malware.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
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://infrive.ru/uplcv?utm_term=zapya+install+download PDF link annotation
- http://wefocusdesign.com/upload/files/64495115795.pdfIn PDF document text
- http://abwlargo.com/uploads/files/85896596403.pdfIn PDF document text
- http://harc-ias.vn/Images_upload/files/61713258954.pdfIn PDF document text
- http://vino-charlie.cz/userfiles/file/57925991882.pdfIn PDF document text
- http://fnathservices.com/upload/file/rizugodowo.pdfIn PDF document text
- https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16146893e24826---kizij.pdfIn PDF document text
- http://veiligheidsslot.nl/ckfinder/userfiles/files/48986767736.pdfIn PDF document text
- http://munnartourism.com/uploads/file/10860591277.pdfIn PDF document text
- https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/1613f4a459069e---81196824066.pdfIn PDF document text
- http://phutungquanghieu.com/app/webroot/files/ckfinder/files/38309566579.pdfIn PDF document text
- http://nemalipics.com/62073069212.pdfIn PDF document text
- http://coreaad.com/DreamDataUpload/file/41903193410.pdfIn PDF document text
- http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/1614642a0a376c---14833094477.pdfIn PDF document text
- http://china-engine.net/ckfinder/userfiles/files/tebuta.pdfIn PDF document text
- http://www.smartusb.info/images/library/File/43675149430.pdfIn PDF document text
- http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c06a956be6---9038501027.pdfIn PDF document text
- http://ampletrekking.com/userfiles/file/konubawimemu.pdfIn PDF document text
- https://aporpeter.ro/userfiles/file/69081730183.pdfIn PDF document text
- http://aquarium-kochi.com/app/webroot/ckfinder/userfiles/files/75248602535.pdfIn PDF document text
- http://prime42.ru/userfiles/files/99795855114.pdfIn PDF document text
- https://irish-setter-zucht.info/ckfinder/userfiles/files/13410298569.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136e50506d0f---lukizema.pdfIn PDF document text
- http://186086.com/upload/files/tuzotij.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_off0000d8f4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD8F4 | 17372 bytes |
SHA-256: 74cc848337abebdc99854ad55444e6406bfed92058de56edeb20272c027b578e |
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font_01_sfnt_off00010612.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10612 | 10316 bytes |
SHA-256: 104dee5a6af2abb72d9fe366317879bf8b83b35267c505be2006d16850ec3591 |
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font_02_sfnt_off00011d87.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11D87 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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