MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains numerous embedded URLs that form a link farm, with several pointing to compromised CMS upload directories or disposable hosting. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves luring users through a malicious document to a compromised site or a phishing page.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
Heuristics 6
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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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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 https://catamma.ru/uplcv?utm_term=mortal+kombat+7+minutes PDF link annotation
- http://ondamarinarest.com/upload/files/wusiworumasuxa.pdfIn PDF document text
- http://brucemayrockinstitute.com/assets/ckfinder/core/connector/php/uploads/files/potisibafaf.pdfIn PDF document text
- http://kppzp.pl/userfiles/file/seduxix.pdfIn PDF document text
- http://wittymall.com/multimedia/userfiles/file/xudetuforewe.pdfIn PDF document text
- https://malashealthcare.com/userfiles/files/25114614302.pdfIn PDF document text
- https://baongochoa.com/upload/file/gumipowewigetikapike.pdfIn PDF document text
- http://terezmisszio.eu/files/file/soxemawuluderopuw.pdfIn PDF document text
- http://goref.ru/files/file/siwamolazolopokoruj.pdfIn PDF document text
- http://ladna.pl/user_images/file/raxusu.pdfIn PDF document text
- https://lostsoulsmemorialnj.org/wp-content/plugins/super-forms/uploads/php/files/fbe8e9e92048fb205ef02e848ce0bced/68500126700.pdfIn PDF document text
- https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/ortlb3692djq5aq0al96lnaqdv/demifedonobunulopavo.pdfIn PDF document text
- http://bulk-supplies.com/userfiles/file/65912656976.pdfIn PDF document text
- https://semot.com/Store/userfiles/file/62293914953.pdfIn PDF document text
- http://tensoinox.com/userfiles/files/41102366186.pdfIn PDF document text
- http://rencontres-icare.org/userfiles/file/samabebov.pdfIn PDF document text
- https://ehbo-oostkapelle.nl/userfiles/file/sejuvudadoloxujimat.pdfIn PDF document text
- http://domingo.hu/ckfinder/userfiles/files/gisowukorudixiwakej.pdfIn PDF document text
- https://webbsoil.com/home/webb/public_html/ckfinder/userfiles/files/21258111312.pdfIn PDF document text
- https://cargobull.cz/res/file/tukadulugegepinewo.pdfIn PDF document text
- http://mdsalon.ru/img/lib/file/bogalobavabutenuteneze.pdfIn PDF document text
- http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/49216c68309a8514ce43981f3b6ed960/81266075639.pdfIn PDF document text
- http://pharmorgsyn.com/upload/files/63544461180.pdfIn PDF document text
- https://profipreklady.cz/www/ckfinder/userfiles/files/34615045858.pdfIn PDF document text
- https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613c98034ba2b---74175407351.pdfIn PDF document text
- https://fzclicks.com/demo/files/editor/file/kixexebojo.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://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_off0000b40e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB40E | 10644 bytes |
SHA-256: 3af6f0e014abf1e15c3c241c4cfa74ce1431779425179eadad40a005de6758cf |
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font_01_sfnt_off0000cc77.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCC77 | 16400 bytes |
SHA-256: 3b298f9853ff73a8206c9a170d1dad43d3ea9a3000a845c65c1288e6a9fb4102 |
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font_02_sfnt_off0000f5ce.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5CE | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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