MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file is identified as malicious by ClamAV and an ML classifier, with high-confidence heuristics indicating it contains links to algorithmically-generated URLs hosted on disposable domains. The document body is heavily obfuscated, but the presence of PDF_URI and EMBEDDED_URL heuristics suggests it attempts to redirect users to external content. The primary attack pattern involves distributing malicious PDFs via links, likely as part of a phishing campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
Heuristics 7
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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 to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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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QR-code redirect lure medium SE_QR_LUREDocument instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
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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://tfh-filter.hu/_user/file/xudebubebisojo.pdf In PDF document text
- http://manuale.aziendasulweb.it/userfiles/files/20887799009.pdfIn PDF document text
- http://xycrusher.com/d/files/27405464571.pdfIn PDF document text
- http://www.koeru.eu/failid/file/80932530448.pdfIn PDF document text
- https://markiza-trade.ru/admin/ckfinder/userfiles/files/56783881327.pdfIn PDF document text
- https://kemxoithanhhang.vn/app/webroot/files/images/pages/files/96176816772.pdfIn PDF document text
- http://laboratorioshamalab.com/userfiles/file/11298691855.pdfIn PDF document text
- http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613163bb18623---881447662.pdfIn PDF document text
- http://zajazd-broadway.pl/galeria/file/zugerenukegebit.pdfIn PDF document text
- http://tkhomedeco.com/assets/uploads/ckedit/files/20210905055504.pdfIn PDF document text
- http://imdmotors.com/uploadfile/file/2021090111343470.pdfIn PDF document text
- http://americasbestwingsbeltsville.com/uploads/files/5950405487.pdfIn PDF document text
- http://sgrappresentanze.eu/userfiles/files/50738564981.pdfIn PDF document text
- http://keacg.com/upload/files/14071082214.pdfIn PDF document text
- https://pavillonwohlen.ch/userfiles/files/93077295314.pdfIn PDF document text
- http://tabouligrill.com/ckfinder/userfiles/files/buvufawojakuw.pdfIn PDF document text
- http://baheth24cars.com/ckfinder/userfiles/files/43780224648.pdfIn PDF document text
- https://gangwontaxi.com/FileData/ckfinder/files/20210904_F5C5255107721E40.pdfIn PDF document text
- http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/s3v4r3nlrk85ogtmo9kegk9lv3/pugenowa.pdfIn PDF document text
- http://trevelci.ru/ckfinder/userfiles/files/tezenubigikojobunapafo.pdfIn PDF document text
- http://clinicaveterinariacittadivignola.com/userfiles/files/pikopawisanimamugeja.pdfIn PDF document text
- https://pointvirgule.ca/upload/editor/file/mixixunosolosekivoti.pdfIn PDF document text
- http://www.temaricerca.com/entry2013new/admindia/ckfinder/userfiles/files/86133665327.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=navegador+android+apkPDF 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_off0000bf90.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBF90 | 17136 bytes |
SHA-256: af89d3ea9b2847b4c9474a87718f4919a46a1ae1afa74600f206605433e33d75 |
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font_01_sfnt_off0000ebd6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEBD6 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000103ed.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x103ED | 10392 bytes |
SHA-256: d08f91bb2a953bee8b0b3f256fa93d28b95ef6c656718b3fbc5a32b465be02b2 |
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