MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous URLs pointing to potentially compromised websites, including those using formcraft plugins for file uploads. The presence of multiple distinct hosts and the use of 'utm_term' in one URL suggest an attempt to lure users to malicious content, possibly for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
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://k-yoga.org/file_upload/spaw_upload/file/20210702025755.pdf In PDF document text
- http://52fotki.ru/ckfinder/userfiles/files/fexobe.pdfIn PDF document text
- http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ee2d3b3173---pidujafota.pdfIn PDF document text
- https://vico-real-estate.com/ckfinder/userfiles/files/sizopazozipiso.pdfIn PDF document text
- https://fontaine-eva.fr/userfiles/files/67299180079.pdfIn PDF document text
- http://mattstergamer.com/wp-content/plugins/super-forms/uploads/php/files/800bljhhdcfpu0taf0ho9lnq28/zezubu.pdfIn PDF document text
- http://curry-box-deluxe.de/userfiles/file/vakagovuwukijotas.pdfIn PDF document text
- http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160926a873d3f7---9899439993.pdfIn PDF document text
- http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085d3188ff63---pevewosolivavipivasit.pdfIn PDF document text
- https://www.gasserbush.com/wp-content/plugins/super-forms/uploads/php/files/866fb907280d3d17d2be8b635cf46509/favob.pdfIn PDF document text
- https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098600c2e742---zikiraxojebivutos.pdfIn PDF document text
- http://umhouses.com/uploads/files/32683915385.pdfIn PDF document text
- https://purefeeling8.com/data/file/2744544507.pdfIn PDF document text
- https://www.rowtheerne.com/wp-content/plugins/super-forms/uploads/php/files/baa50b7eefa55f3d77be5731b03f08f8/xavovudumimoko.pdfIn PDF document text
- http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606cebd9929d8---fotifolowadopu.pdfIn PDF document text
- http://lawngo.net/fckfiles/xokoziziseramewoku.pdfIn PDF document text
- http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/db3619407d61c11fb17260403a0681e1/sinul.pdfIn PDF document text
- http://akgikorea.com/file_upload/fck_upfile/file/44562350775.pdfIn PDF document text
- http://chromatographvials.com/d/files/7660665565.pdfIn PDF document text
- http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160949c5f15038---43124699808.pdfIn PDF document text
- http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6c24d12392---juvuwabofugukifexar.pdfIn PDF document text
- http://tai-group.com/upload/files/dikinoxuzidi.pdfIn PDF document text
- http://veterina-hrib.cz/user-uploads/files/tututub.pdfIn PDF document text
- https://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/h1j6ao25ee01hk64og07ib8ht3/fisikawanidiwaxefupuwufal.pdfIn PDF document text
- http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b205a4a688a---garugitata.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=pact+with+the+sunPDF 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_off0000cee7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCEE7 | 16740 bytes |
SHA-256: 49ac944b77c39dd41d9c10e3d7530362502f923f860dc0e07cef76f2f322f286 |
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font_01_sfnt_off0000fa42.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFA42 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011259.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11259 | 10248 bytes |
SHA-256: 99715b7fec72630f81da3d0d9253bad022a7e563bc50b8c6533a187dfd6a37c7 |
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