MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal that the document functions as a link farm, directing users to multiple compromised WordPress sites and disposable hosting domains. These links likely serve to distribute further malware or facilitate phishing attacks.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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://laborke.ru/uplcv?utm_term=android+studio+php PDF link annotation
- https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/1b7e2f106fc2b86bd13e9017e9e3eddc/26491548575.pdfIn PDF document text
- http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/161408cafc3c93---98350150386.pdfIn PDF document text
- http://czechnews.cz/userfiles/files/37852538916.pdfIn PDF document text
- https://hunglivet.com/uploads/files/202109052108546516.pdfIn PDF document text
- https://www.burnat-provins.ch/ck/ckfinder/userfiles/files/newirokosudomewaniwawevil.pdfIn PDF document text
- http://facyt.com.ar/ckfinder/userfiles/files/80665976742.pdfIn PDF document text
- http://htygroup.com/upload/files/35459037162.pdfIn PDF document text
- http://www.beautyvogue.ch/Files/file/xapoveguxir.pdfIn PDF document text
- http://ndt-tl.ru/upload/file/16428337221.pdfIn PDF document text
- http://fermobkorea.com/userfiles/file/20210918061410.pdfIn PDF document text
- http://didaconcept.com/admin/fckeditor/file/53869992355.pdfIn PDF document text
- http://romanasulcikova.cz/userfiles/wofusozizizexusoweruzi.pdfIn PDF document text
- https://semagro-msw.ru/pics/images/file/sofawilelikozavirujupali.pdfIn PDF document text
- http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fb75f37810---33749892931.pdfIn PDF document text
- http://winfielddeli.com/ckfinder/userfiles/files/depibesezujul.pdfIn PDF document text
- http://cansuyu.org/resimler/files/12098181300.pdfIn PDF document text
- http://oguzlarotomatiksanziman.com/depo/sayfaresim/file/26777448395.pdfIn PDF document text
- http://bharatandcompany.in/ckfinder/userfiles/files/dusowusetaxube.pdfIn PDF document text
- http://studiofantino.it/userfiles/files/kikiluzirolav.pdfIn PDF document text
- http://assessmentinsight.com/ckfinder/userfiles/files/vevoxamovobobuzev.pdfIn PDF document text
- http://metabolitplus.ru/files/file/juwesevovonesez.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_off0000b5bc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB5BC | 16260 bytes |
SHA-256: 8f5c0d5548e56f22fcaa172ed45095a670cc0ed3d570028ebea6cf7b481273c7 |
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font_01_sfnt_off0000df28.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF28 | 10228 bytes |
SHA-256: 60f52d16f264bf3cd5e96938450aaeae59b63e53969c0c2d421260b527423c5d |
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font_02_sfnt_off0000f60d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF60D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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