MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as a malicious PDF by ClamAV and an ML classifier. It contains numerous embedded URLs, many of which point to disposable domains, indicating a link farm designed to obscure the ultimate destination. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic confirms this behavior. While no scripts were explicitly extracted, the nature of the embedded URLs suggests a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
Heuristics 5
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://noithatachau.vn/webroot/img/files/81383330726.pdf In PDF document text
- http://clubmaniacr.com/campannas/file/91770260272.pdfIn PDF document text
- https://birudongker.com/contents/files/rogab.pdfIn PDF document text
- https://happycustomerservice.com/wp-content/plugins/super-forms/uploads/php/files/7789f03fe16c46f6d0fd6a30a31c1a9a/14061127981.pdfIn PDF document text
- http://laihoawedding.com/app/webroot/upload/files/ramujevobaz.pdfIn PDF document text
- https://tanthueviet.vn/img_data/files/vapalonorop.pdfIn PDF document text
- http://electric-kernbichler.at/zodadetil.pdfIn PDF document text
- https://www.tahitotfalu.hu/ckfinder/userfiles/files/nipogagamexosipumuvixez.pdfIn PDF document text
- https://www.pension-chevaux-haras-gabereau.fr/ckfinder/userfiles/files/vukef.pdfIn PDF document text
- http://xn--q20b13r9leepaeb.net/upload/file/202109110156449575.pdfIn PDF document text
- http://www.neoneofitou.com/ckfinder/userfiles/files/64326674607.pdfIn PDF document text
- http://de-ko-gmbh.com/ckfinder/userfiles/files/28916084978.pdfIn PDF document text
- http://vongtaygiay.net/media/ftp/file/71022037708.pdfIn PDF document text
- https://ganganagardentist.com/userfiles/file/pijodikibuwimus.pdfIn PDF document text
- http://karinameal.com/imgdish/files/15782901956.pdfIn PDF document text
- http://ahxxzx.com/userfiles/202109/file/dadizotafogufuloriga.pdfIn PDF document text
- http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/161362f6f568fa---89651210627.pdfIn PDF document text
- http://terremeraude.com/userfiles/file/fezujamofejiwatoxeteboz.pdfIn PDF document text
- https://shoppingplanet.cityplanet.ro/ckfinder/userfiles/files/45201476574.pdfIn PDF document text
- https://burlingame.com/wysiwygfiles/file/nuxezupobafinonen.pdfIn PDF document text
- http://www.alexgis.com/siteuploads/editorimg/file/sifomeluwiduzokiv.pdfIn PDF document text
- http://hansungid.com/userfiles/file/73076620177.pdfIn PDF document text
- http://velapower.com/glwh/UploadFile/file/2021090519453773499.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=present+simple+and+past+simple+exercises+pdfPDF 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_off0000bc87.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBC87 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d499.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD499 | 16228 bytes |
SHA-256: 0cd803c2dc5eab0f2118939911989f9c758f71aa5a21f9e616030f9614753d66 |
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font_02_sfnt_off0000fe2b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFE2B | 10764 bytes |
SHA-256: dae25b8c8f302536378fbda9a606048cdb9e0f765e1eb965a50dc33b4a02b19b |
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