MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm, with many URLs pointing to potentially compromised websites or disposable hosting. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall structure and URL analysis suggest it's designed to redirect users to malicious content, likely for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.7240
Heuristics 5
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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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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://vantaidongsaigon.com/uploads/files/57701309504.pdf In PDF document text
- http://xaydunglenguyen.vn/upload/files/0dd4d4.pdfIn PDF document text
- https://heritran.vn/uploads/news_file/39702196158.pdfIn PDF document text
- https://verlauf-ekb.ru/admin/ckfinder/userfiles/files/pizugetejufo.pdfIn PDF document text
- http://versobrokers.eu/userfiles/files/bekesedalaxawidipan.pdfIn PDF document text
- https://junona.manyel.website/images/uploads/medium/12185501930.pdfIn PDF document text
- https://penzion-palice.cz/content/gebajilug.pdfIn PDF document text
- https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/d6650e4eeb8a18787519c683691bf73f/69748319744.pdfIn PDF document text
- http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161398d15a2925---fezufose.pdfIn PDF document text
- http://wignaccent.com/FCKeditor_2.6.3/userimages/file/20210908190225.pdfIn PDF document text
- http://mmckno2010.zkosuchdol.info/files/xasijovone.pdfIn PDF document text
- https://viboot.traigiongthuha.com/ckfinder/userfiles/files/kazotesekekulexekiwim.pdfIn PDF document text
- https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/pehsc8etug47q73o85kt06pj9a/milag.pdfIn PDF document text
- http://thechelseaff.com/user_uploads/files/78262165383.pdfIn PDF document text
- https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/9b2ed93ea89e2f671834e8ec06ed9cbe/bikematakajatixorimidagin.pdfIn PDF document text
- https://himalmanpower.com/ckfinder/userfiles/files/72269454380.pdfIn PDF document text
- http://graficaeformazione.it/userfiles/file/53905110593.pdfIn PDF document text
- https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/161353dad416d0---45085838872.pdfIn PDF document text
- http://omatsuri.kr/data/userfiles/files/53069781078.pdfIn PDF document text
- https://camping-du-lac-dijon.com/userfiles/fichiers/27643529993.pdfIn PDF document text
- https://kindliving.org/wp-content/plugins/super-forms/uploads/php/files/tmp/14178513320.pdfIn PDF document text
- https://dukra.sk/editor_uploads/files/newul.pdfIn PDF document text
- http://daisytalavera.com/userfiles/files/lomebolisivekob.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=bhagavath+geethai+tamil+book+pdfPDF link annotation
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000bb9c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBB9C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d3b3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD3B3 | 10924 bytes |
SHA-256: e24aa5d3599ce528fe286438dbf3c2eda714300dc9d74edc6883850054e00d45 |
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