MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF document was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious content. It contains numerous embedded URLs that form a link farm, likely intended to redirect users to phishing sites or download further malware. The `wkhtmltopdf` authoring application suggests it may have been generated programmatically for malicious purposes.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
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://smidgel.ru/uplcv?utm_term=best+kodi+iptv+build PDF link annotation
- http://lt101shop.com/userfiles/files/16670751181.pdfIn PDF document text
- https://flcevent.fcu.edu.tw/plugin/ce1/ckfinder/userfiles/files/20210918013617.pdfIn PDF document text
- http://explosivedevices.ru/media/file/sakixoxejutumegonikofopif.pdfIn PDF document text
- https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/2uk9lipvr591o6nj9211ncsli5/83827001987.pdfIn PDF document text
- https://theemperorsoldclothes.co.uk/wp-content/plugins/super-forms/uploads/php/files/oanddtqsceog8hqou57u1gur1j/pifum.pdfIn PDF document text
- http://kingkady.com/uploadfile/files/dilebiberoremoxujadupo.pdfIn PDF document text
- http://ziconiavip.com/uploadfck/file/73787890902.pdfIn PDF document text
- https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/d7573db35bec0af8d7e2d4a36968b5e1/dokikufilisomogudutaw.pdfIn PDF document text
- http://31kouqiang.com/userfiles/file/1631409452.pdfIn PDF document text
- http://electriccityusa.com/images/fck_uploads/file/58953036108.pdfIn PDF document text
- https://sieuviet.net/webroot/img/files/voteralezisusuzep.pdfIn PDF document text
- https://sabagdasarov.ru/upload/file/wuvijaz.pdfIn PDF document text
- http://oticonshop.com/ckfinder/userfiles/files/waxemirulabeloxeputafaf.pdfIn PDF document text
- http://csc0532.com/userfiles/file/20210911211012_f4x4bs.pdfIn PDF document text
- http://sp3siemianowice.pl/userFiles/files/xovopegada.pdfIn PDF document text
- https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/1f9d46b403981cf3c1314b1d512da0f8/73529576917.pdfIn PDF document text
- http://2017.letnifestiwal.pl/ckfinder/userfiles/files/puvumunabopove.pdfIn PDF document text
- https://livres-arts.com/ckfinder/userfiles/files/3482178754.pdfIn PDF document text
- https://fokusmedia.com/images/uploads/detufuwidonanixip.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_off0000d143.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD143 | 18304 bytes |
SHA-256: 89ac558f8e8ac7aea414cca8a5450e7f6be54049927338f8a30539a551b90fa1 |
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font_01_sfnt_off000100fb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x100FB | 10468 bytes |
SHA-256: 40fe06d065525fb3dfdb05a973a68ae26c6451ed5c75ad0ca3886726c9770b59 |
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font_02_sfnt_off000118c0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x118C0 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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