MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs pointing to various domains, many of which appear to be compromised or disposable hosting. Heuristics indicate a link farm pattern, with a high ML score and ClamAV detection confirming malicious intent. The document body is unreadable, but the presence of external URIs and the PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristic suggest the primary function is to redirect users to malicious content, likely phishing or malware distribution sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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://ketchas.ru/uplcv?utm_term=drawbacks+of+information+technology PDF link annotation
- https://arhstroi.by/uploads/files/13855656590.pdfIn PDF document text
- http://acevina.com/webroot/img/files/golusimudimuvokowofe.pdfIn PDF document text
- https://smartcirclegroup.com/userfiles/file/muzonolonusuwunamibiz.pdfIn PDF document text
- http://cjmfgxfollow.morefriendship.com/upload/files/rogiwikanagowuvasido.pdfIn PDF document text
- https://urbanshapes.in/userfiles/file/bevofow.pdfIn PDF document text
- https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/161b508b8a9a0af8ac1542a039632d08/2109568069.pdfIn PDF document text
- http://ssaisarang.com/ckfinder/userfiles/files/vizokux.pdfIn PDF document text
- http://dreamwith.gni.kr/ckupload/files/52512109777.pdfIn PDF document text
- http://tutek.eu/userfiles/file/jomedukoraz.pdfIn PDF document text
- http://neodev.space/wp-content/plugins/formcraft/file-upload/server/content/files/16141c1dc3dfc8---44358912512.pdfIn PDF document text
- http://gaestehaus-am-erlkoenig.de/img/editor/file/8965790140.pdfIn PDF document text
- http://wcsps.com.tw/ckfinder/userfiles/files/52539717569.pdfIn PDF document text
- https://swift-tw.com/lcc/upload/files/59927945422.pdfIn PDF document text
- http://k12kos.com/ckfinder/userfiles/files/4208853484.pdfIn PDF document text
- http://progettogeometra.it/userfiles/files/51712416637.pdfIn PDF document text
- https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/gvkglbh0ahcjm4opfg42tn4aoj/88618201361.pdfIn PDF document text
- http://take114.kr/FileData/ckfinder/files/20210905_F6450512998C063A.pdfIn PDF document text
- http://2478.ru/admin/ckfinder/userfiles/files/vasuletamobopopuzotig.pdfIn PDF document text
- https://limsurdua.com/contents/files/ludamodukunebo.pdfIn PDF document text
- http://www.gesas.it/media/mailinglist/file/xivelexevinuwonek.pdfIn PDF document text
- https://phunhai.net/upload/files/66252103239.pdfIn PDF document text
- http://askort.pl/Upload/file/gikelezozirolitadoke.pdfIn PDF document text
- http://prplus4u.com/ckupload/files/36677291856.pdfIn PDF document text
- https://attackworkoutprogram.com/app/webroot/files/ckfinder/userfiles/files/mesak.pdfIn PDF document text
- http://levant-tekstil.com/other_files/File/xuvew.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_off0000e8eb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE8EB | 11216 bytes |
SHA-256: 2e5b3cac7e3fc3ea788f88988d2aee102cf9b19742fd796fb0f89ff0f10c1963 |
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font_01_sfnt_off00010318.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10318 | 18260 bytes |
SHA-256: 419e26a319087af46d4649a5c4f62b0fbf9ab001e9d30569da4f5538c48d03aa |
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font_02_sfnt_off0001322f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1322F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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