MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs pointing to various domains, many of which appear to be compromised websites or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' strongly indicate a link farm designed to manipulate search engine results or host malicious content. The ML classifier and ClamAV detection further confirm the malicious nature of this PDF.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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://inwebjor.ru/uplcv?utm_term=gba+emulator+pokemon+emerald+randomizer
- http://grubstreet.ca/ckfinder/userfiles/files/natojidewoninifa.pdf
- https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/vk1mg49tj7ppnnh3ovijquh2b7/fufadonetivuxiliga.pdf
- http://video-cycling.de/files/file/nikobesojelelitof.pdf
- https://limadelimon.com/images/file/jinebizonibowapameri.pdf
- http://theexplorerthai.com/userfiles/files/pujosowegekobubev.pdf
- http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16140e69b026a1---6967323631.pdf
- http://winteringlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/lojetomulokibu.pdf
- http://gr-chem.com/upload/files/sebulibadas.pdf
- http://retailcop.ca/files/95480592630.pdf
- http://safeabortionnepal.com/userfiles/file/sixavasujutoxa.pdf
- http://jncs.kr/page_data/file/20210916105746.pdf
- http://keyflounge.nl/userfiles/file/mofabiforor.pdf
- http://come2menorca.com/images/file/wodadugamelodumedosupoda.pdf
- http://mfcwestenkwartier.nl/beta/userfiles/file/6189694551.pdf
- http://expresskaliski.info/file/216892117.pdf
- http://eastendmediation.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/64981054858.pdf
- http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/161452cde9abea---dozotuputemezujixogu.pdf
- http://serdceprirody.ru/userfiles/file/lemebapakipomif.pdf
- https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/fcg10jmlfb81usbvnrc164otic/67322753802.pdf
- http://fli.edu.mn/ckfinder/userfiles/files/23363674424.pdf
- http://global-gypsum.com/wp-content/plugins/formcraft/file-upload/server/content/files/161395400efa54---88160795501.pdf
- http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/e34ebdba42758f0be33b40abec4b3b04/57748211792.pdf
- http://kyochonbuenapark.iorderfoods.com/uploads/files/19713406818.pdf
- http://stkvn.ru/wp-content/plugins/super-forms/uploads/php/files/2da51a136af06db7e17a23d847a6c40e/9371646201.pdf
- https://bokaichenyu.com/upload/files/61349856374.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f549.bin27263b77966fa028cd04bb74357456421ef9c2cdb4ad2a84bf8eeba7b5d58c5e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF549 | 10816 bytes |
font_01_sfnt_off00010dfd.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10DFD | 16792 bytes |
font_02_sfnt_off0001260f.binacd142eec83125c9b6b0e54142e116bc017654b5a903b1d1f10bd9ffa357c3f7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1260F | 19068 bytes |
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