MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm. It contains numerous URLs pointing to compromised WordPress sites and disposable domains, suggesting an attempt to lure users to malicious content. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a deliberate effort to create a link farm on potentially untrusted hosting.
Machine Learning
- Nyx PDF Classifier malicious score 0.9946
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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=estad%C3%ADstica+para+administraci%C3%B3n+y+econom%C3%ADa+solucionario+pdf PDF link annotation
- https://hkparkkonutlari.com/image/files/70233713428.pdfIn PDF document text
- https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abe60d81369---23708005516.pdfIn PDF document text
- https://basisnomor.com/contents//files/xelorofukij.pdfIn PDF document text
- https://drddvichitra.com/userfiles/file/48669420470.pdfIn PDF document text
- https://faprosid.com/file/30068971826.pdfIn PDF document text
- http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/r01lj08fi2b0v7au71inc1v5i7/zatefadisofulenudowari.pdfIn PDF document text
- https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/e1bc565f74fb96907014186f411bb686/megenageboxetuj.pdfIn PDF document text
- http://taitung-house.com/CKEdit/upload/files/bapaxudemogopepazimul.pdfIn PDF document text
- https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/16104144fe2c37---37047557786.pdfIn PDF document text
- http://rosesrealtyhomes.com/userfiles/files/24732339978.pdfIn PDF document text
- http://tksvolga.ru/userfiles/file/11263536927.pdfIn PDF document text
- http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/160adc953c5121---kitiduvesukukow.pdfIn PDF document text
- https://llsindia.in/FCKeditor/file/2590373569.pdfIn PDF document text
- https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/d04e715381c4df5bd13aef29e0f24978/75536482593.pdfIn PDF document text
- http://bidhichand.org/sahodyatarntaran/userfiles/file/joletutobugijugaxur.pdfIn PDF document text
- https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc98a3e32ad---2362854751.pdfIn PDF document text
- http://aarogyamedico.com/userfiles/file/5704802027.pdfIn PDF document text
- http://neodev.space/wp-content/plugins/formcraft/file-upload/server/content/files/160a65150b7557---79944286439.pdfIn PDF document text
- http://wamer.org/userfiles/file/ritivogewoxukikos.pdfIn PDF document text
- https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/90dcc62623898e9533e4bcab6479e419/duremefeporofuwuzoji.pdfIn PDF document text
- http://www.suffaheducation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088a5523052b---mupogasogituroxinus.pdfIn PDF document text
- https://mackbeks.com/files/file/45532192281.pdfIn PDF document text
- http://hak-al.com/resimler/files/jubanolofenew.pdfIn PDF document text
- http://itaindustrial.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608a28c164c6f---fiborofuw.pdfIn PDF document text
- http://fullx.net/files/12655588685.pdfIn PDF document text
- http://btc-ltd.com/upload/file/vasotepeluxi.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_off0000c8a2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC8A2 | 16608 bytes |
SHA-256: ba7d5a3397af3e341ab599f57499b77d1225af259c2e819c5f064475b19a1995 |
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font_01_sfnt_off0000f286.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF286 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010a9d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A9D | 11176 bytes |
SHA-256: 40878deafcb35926715f596f546deb8276192a556c37a89289309d93b183b2cd |
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