MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating maliciousness. The presence of numerous external URIs, many pointing to disposable hosting and employing UTM parameters, suggests a link farm designed to redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate it's part of a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9876
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 https://medvor.ru/uplcv?utm_term=lewis+dot+diagram+for+nh3 PDF link annotation
- http://premiercontainerlines.com/media/ftp/file/tarivefamafomisege.pdfIn PDF document text
- https://designmaster.in/scgtest/eec-new/codelibrary/ckeditor/ckfinder/userfiles/files/69203007086.pdfIn PDF document text
- https://snoman.mb.ca/ckfinder/userfiles/files/tikawejiwazet.pdfIn PDF document text
- http://ctkupavna.ru/upload/file/29651437512.pdfIn PDF document text
- http://villabrown.it/userfiles/files/borexasaxotobalurufamarak.pdfIn PDF document text
- http://xn--oy2b19v1mb1yi.com/userfiles/file/mumimuka.pdfIn PDF document text
- http://www.alexgis.com/siteuploads/editorimg/file/80647518712.pdfIn PDF document text
- http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1614caf253e7a6---torelimuxa.pdfIn PDF document text
- http://rasmesafar.net/basefile/basefiles/fagazakaguni.pdfIn PDF document text
- http://raegcafe.com/uploads/files/memobikolofuguporar.pdfIn PDF document text
- https://olterus.net/contents/files/98067161631.pdfIn PDF document text
- http://ptairsupply.com/userfiles/file/32323994561.pdfIn PDF document text
- https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614e6c947ffe4---kanedebiv.pdfIn PDF document text
- https://socardan.com/userfiles/files/bovagi.pdfIn PDF document text
- https://webmanagement.jbclub.ro/images/file/4324610207.pdfIn PDF document text
- https://nocrime.cntwn.org/ckfinder/userfiles/files/50516107230.pdfIn PDF document text
- https://ta-taiwan.com/app/webroot/userfiles/files/tudonurabuvevatafuj.pdfIn PDF document text
- http://litho-and-co.fr/ckeditor/upload/files/biwakutukowoluliwa.pdfIn PDF document text
- http://splhardware.com/UploadFile/file/2021092704493473499.pdfIn PDF document text
- http://photou.cc/ckfinder/userfiles/files/lojedifepuzadugudapidudo.pdfIn PDF document text
- http://szkolaprywatnaleszno.pl/userfiles/file/45955532737.pdfIn PDF document text
- http://mhfmjournal.com/data/22/2/55/64/2544879/user/2788947/htdocs/userfiles/file/77408125185.pdfIn PDF document text
- https://kaptenhoki.com/contents/files/gizulujajebebiwapizeri.pdfIn PDF document text
- http://studiocalderini.it/userfiles/files/76215743144.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://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_off00010629.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10629 | 22340 bytes |
SHA-256: e50ee72d828fb1a74f9d14ec3bb380e59ca545c12b901b3dab0180a498c476df |
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font_01_sfnt_off00014056.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14056 | 10972 bytes |
SHA-256: 4194a9c27f7cac99871362540b9603dbc5063c632295d70549e4caded102fc61 |
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font_02_sfnt_off00015982.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15982 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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