MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple disposable domains, which is a common tactic for phishing or malware distribution. The presence of numerous unknown URLs supports this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
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://kfbi.ru/content/file/21324990948.pdf In PDF document text
- http://kimkhimientrung.com/uploads/image/files/xuresasajejavegut.pdfIn PDF document text
- http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/160a3bcbe41151---ledonarujizerixesiliwa.pdfIn PDF document text
- http://forter.vn/hinhanh/file/wizowamamukawu.pdfIn PDF document text
- https://seroinstitute.com/wp-content/plugins/super-forms/uploads/php/files/9af84b299e82159ad7977c4a196d301e/71404429661.pdfIn PDF document text
- http://puzynowska-kancelaria.com/userfiles/file/ximopobed.pdfIn PDF document text
- https://grafitpoint.ru/wp-content/plugins/super-forms/uploads/php/files/bd8bcfc0bc492493a307bb1528e2dd43/82299386661.pdfIn PDF document text
- https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607387483ae7b---38091568160.pdfIn PDF document text
- http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16098254609297---48250620440.pdfIn PDF document text
- https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/d5745db888057b355049e1dc7c1321a8/19583192833.pdfIn PDF document text
- http://usateatop.com/_upload/files/19344520197.pdfIn PDF document text
- http://acecaalcoy.com/userfiles/file/xufunirubotijujovitegusew.pdfIn PDF document text
- http://anthonyvienna.com/sites/default/files/file/pamoxe.pdfIn PDF document text
- https://georgiamusicpartners.org/wp-content/plugins/super-forms/uploads/php/files/156634d9ad006ca504586962542e1632/firojizelif.pdfIn PDF document text
- http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/160845a7a38071---mirefumekewemusizaveram.pdfIn PDF document text
- https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/6cedc0b49fb242d84d519aac9acde4f9/12248448445.pdfIn PDF document text
- http://www.asslar.de/downloads/22130742960.pdfIn PDF document text
- https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/nv7aqk72uvrdssf0dbbslaia9t/tudexabojeduvipuk.pdfIn PDF document text
- https://sf-tfi-pgu.uz/wp-content/plugins/super-forms/uploads/php/files/254d00ac6a9b8885f3b0a377c0fcf32f/xunalifi.pdfIn PDF document text
- http://bright-inter.com/file_media/file_image/file/zukididur.pdfIn PDF document text
- http://asbu.net/uploads/FCK_files/file/zozepuzidimaleredevo.pdfIn PDF document text
- https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d237d804d54---bopujitu.pdfIn PDF document text
- https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/2d17662131ee1513b164d48d15209b65/purub.pdfIn PDF document text
- https://syteq-pro.com/userfiles/file/93060944348.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=manual+differential+normal+rangesPDF 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_off0000e805.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE805 | 16652 bytes |
SHA-256: dfbcf052f1f8720fa5e289e59135ce6292ee2c9b9fedc43e4cbbd3487d2d8fde |
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font_01_sfnt_off00011310.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11310 | 10788 bytes |
SHA-256: 1ccbf6145c1551e136d1a37d1709e58964a6319b9b4a5fe813114ca69645ce04 |
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font_02_sfnt_off00012ba8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12BA8 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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