MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links, many pointing to disposable hosting and employing UTM parameters, suggesting a link farm designed for SEO poisoning or phishing. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports this, indicating the document is part of a campaign to distribute malicious files via compromised websites.
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://catamma.ru/uplcv?utm_term=download+resident+evil+1+android PDF link annotation
- http://dtyxbpzx.com/filespath/files/20210911091948.pdfIn PDF document text
- http://dealershop.es/camarasegovia/userfiles/file/8831189856.pdfIn PDF document text
- http://casaledellasignora.it/userfiles/files/zarulidulevezuwujumanez.pdfIn PDF document text
- http://ozdermusavirlik.net/userfiles/file/rofik.pdfIn PDF document text
- https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/161389d8c99794---1438104932.pdfIn PDF document text
- https://koncnc.com/genelresimler/file/81788297033.pdfIn PDF document text
- http://positiveforce.in/uploads/files/52352665787.pdfIn PDF document text
- http://ambvetbrashersclavoghisu.eu/userfiles/files/rokatedezexipovev.pdfIn PDF document text
- https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/3b2e4a65542eabb007e2fa88b5ec86a7/68884870481.pdfIn PDF document text
- http://jsdarvin.com/files/69402222505.pdfIn PDF document text
- http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/1614216f393121---kawuzaf.pdfIn PDF document text
- http://assisdrive.pt/userfiles/file/natanudogaradisin.pdfIn PDF document text
- http://coral-travel66.ru/admin/ckfinder/userfiles/files/32293055309.pdfIn PDF document text
- http://xn----7sbab1bcaqplb0ccyi9d.xn--p1ai/files/file/foxukojadew.pdfIn PDF document text
- http://smart.sut.ac.th/tsme/src/lib/ckfinder/userfiles/files/warijawatekerakarot.pdfIn PDF document text
- https://bibonatura.com/ckfinder/userfiles/files/resuvonaziso.pdfIn PDF document text
- http://eva.am/files/6120686002e8dc63.pdfIn PDF document text
- http://shinaval.ru/userfiles/file/59232502617.pdfIn PDF document text
- http://busankid.com/webfiles/board/file///waroxowukilojaka.pdfIn PDF document text
- http://telegid.tv/userfiles/file/safoxuv.pdfIn PDF document text
- http://abacusnancy.com/userfiles/file/48857148315.pdfIn PDF document text
- http://105chers.netsociality.com/upload/files/pivixixu.pdfIn PDF document text
- https://lapdonline.org/file/xedufinekajexufisaki.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_off0000bed3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBED3 | 22076 bytes |
SHA-256: 668500fd2f88c9c7a5ce313d7d7bf8dc6312852521eb8af57571ec7537c47542 |
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font_01_sfnt_off0000f55e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF55E | 10448 bytes |
SHA-256: 88e8049f50e95b03cafb2fbb27161d5ecac015e3bfc66d146454239ccbe382de |
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font_02_sfnt_off00010d4c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D4C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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