MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.001 User Execution: Malicious Link
The PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains numerous embedded URLs, many pointing to compromised WordPress upload directories or disposable hosting, indicating a link farm designed to redirect users to malicious content. The presence of these link farms suggests an attempt to facilitate phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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=how+to+add+a+contact+in+whatsapp+android PDF link annotation
- https://fancybox.pamlskovnik.cz/ckfinder/userfiles/files/21040592066.pdfIn PDF document text
- https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130a15d9e70b---53977583645.pdfIn PDF document text
- https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/huciin3qq67ln6ucjid3ng492h/11342207286.pdfIn PDF document text
- http://www.smartlandgroup.com/ckfinder/userfiles/files/64526984409.pdfIn PDF document text
- http://letnipohar.cz/upload/file/29661159192.pdfIn PDF document text
- http://www.kindytennis.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d86cbef3d0---pukija.pdfIn PDF document text
- http://hijoin.hu/editor_up/7328710499.pdfIn PDF document text
- http://jfhconsultancy.nl/userfiles/files/gaporinarozolida.pdfIn PDF document text
- http://narnivet.com/userfiles/files/13855314411.pdfIn PDF document text
- https://hocaukhudothithanhphogiaoluu.com/asset/site/files/77709397871.pdfIn PDF document text
- https://rdsdealers.com/ckfinder/userfiles/files/tofenoke.pdfIn PDF document text
- https://parc-hotel.info/file/puvekebimomi.pdfIn PDF document text
- http://sh-ruiyangcpa.com/userfiles/file/2021-9///2021912221133469.pdfIn PDF document text
- http://skonasystems.com/userfiles/file/gobovuwawupi.pdfIn PDF document text
- http://brmxn.com/userfiles/file/20210911052920_gklmxy.pdfIn PDF document text
- https://smartech.lv/sites/smartech/uploads/documents/files/32389596799.pdfIn PDF document text
- http://fthyhs.com/resource/docContentImg/file/2021-09-12/8eb3a525142187b18d00323023999a50.pdfIn PDF document text
- http://copingconversations.com/userfiles/file/1917086461.pdfIn PDF document text
- http://crm333.com/documentos/file/lewitenota.pdfIn PDF document text
- https://exlite.it/ckfinder/userfiles/files/74340862632.pdfIn PDF document text
- https://techson-cctv.com/upload/file/dozetej.pdfIn PDF document text
- https://dolphinsolutions.net/ckfinder/userfiles/files/nesumizulelewiro.pdfIn PDF document text
- https://bxthirteen.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/6e732ed113544042262683c9dc3a4a00/9785343386.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_off0000c94f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC94F | 17344 bytes |
SHA-256: 6eabe1163fe2ad06031ff1f1051c0945ad8a84ecb4c63924a6a18823ecde3c02 |
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font_01_sfnt_off0000f66a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF66A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010e81.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E81 | 10508 bytes |
SHA-256: 41c5e09697d580843061289482ca39b2ab70a0526f6c81436f3e4bd2a88d85d1 |
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