MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV, indicating malicious intent. It contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of PDF-specific heuristics like 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this. Although no scripts were explicitly extracted, the nature of the embedded URLs and the overall detection profile strongly suggest a phishing or malware distribution vector, likely initiated via spearphishing.
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 http://jyjwqj.com/uploadfile/file///2021091203060179.pdf
- http://impactpluslearning.com/ckfinder/userfiles/files/kopevajulisapi.pdf
- http://forti.in/userfiles/file/pakarofoxonabenowurep.pdf
- https://ubranni.com/uploader/files/62820344765.pdf
- http://go-pxl.com/uploads/files/zajubilitaguxaxidukurode.pdf
- https://matrainagycsalados.hu/userfiles/file/lugidove.pdf
- http://bhhangkhong.com/upload/images/files/99798880044.pdf
- http://dorrstrechy.cz/UserFiles/File/91577441989.pdf
- https://rgcsmt.org/ckfinder/userfiles/files/54701875523.pdf
- https://at2-turbo-j3t.com/contents/files/lonuwuxab.pdf
- https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/945c9832bbc0a53286f563c5b238736a/tevotirasuwogezejetisuxo.pdf
- https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f2fc41a679---82337343987.pdf
- http://madinagirls.com/easydo%20v2.00/files/uploads/80899056505.pdf
- https://silverbirdmarketing.com/pages/images/file/78134286807.pdf
- https://kindliving.org/wp-content/plugins/super-forms/uploads/php/files/tmp/nusujan.pdf
- https://traveletrust.com/basefile/traveletrustcom/files/84276149185.pdf
- http://avtokapriz42.ru/userfiles/file/ziviziruf.pdf
- http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161472a0e7bc98---nibopukozozafexevi.pdf
- http://vizesblokk.hu/files/file/57634378055.pdf
- http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137f06200490---lajasudofedisexetanukipi.pdf
- http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fcbaf1cc1a---59198953282.pdf
- https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/96a05780ae85b9e1a82f433f2282631b/32479903366.pdf
- http://cleangroupbd.com/ck/upload/files/lodamelilekobefu.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=network+layer+responsibilities
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f5ef.bine074214cf154b9c4c019eb8b2099e4c8f7e2d9d7f96af5a2bc793d6c93e73417 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5EF | 17724 bytes |
font_01_sfnt_off00012424.bin55cc9caf9c1781980cb526040494748463e012a542f78710349ba05901c8faa1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12424 | 10652 bytes |
font_02_sfnt_off00013c83.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13C83 | 16792 bytes |
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