MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a PDF link farm pointing to numerous distinct hosts, many of which appear to be compromised WordPress sites or disposable hosting. The embedded URLs suggest a phishing or malware distribution scheme, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
Heuristics 6
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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 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://nomylo.ru/uplcv?utm_term=can+you+deposit+an+endorsed+check+online PDF link annotation
- http://metallpress.ru/files/2953928598.pdfIn PDF document text
- http://guojingmall.com/userfiles/file///fupovalexufudojizunukelix.pdfIn PDF document text
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cf38ec7cea8---15045587723.pdfIn PDF document text
- http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608181a3cb9fc---sugiparofitenosopime.pdfIn PDF document text
- https://madopin.com/calisma2/files/uploads/47149880838.pdfIn PDF document text
- http://baliretreatcenter.com/olabali_ci/media/images/newsfiles/18307674254.pdfIn PDF document text
- https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/783ida1mgr1hnevmvp2nj0qhn8/fikageluwozexiwuxa.pdfIn PDF document text
- http://moda-minulosti.cz/docs/momin/file/juseriwunufiberuwukagax.pdfIn PDF document text
- https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/c3780bae640d5b4961b3a866decfd917/wewagebawodedunosik.pdfIn PDF document text
- http://www.lifestaralberta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ede1c94c73a---21363470228.pdfIn PDF document text
- https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088d265aa2d8---71028884253.pdfIn PDF document text
- https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/582b216bce6763591ff7a58c91ca419f/66978658991.pdfIn PDF document text
- http://lakes77.com/clients/47041/File/govumosirug.pdfIn PDF document text
- http://animationcoach.com/userfiles/file/rusivujut.pdfIn PDF document text
- https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a861561cf47---fuvokesixibinenozel.pdfIn PDF document text
- https://ildiko-szepsegszalon.hu/userfiles/file/puzemeruvanivatawerikin.pdfIn PDF document text
- http://opuspoint.com/ckfinder/userfiles/files/mapavelaxetix.pdfIn PDF document text
- https://heritagecambodiatravel.com/userfiles/file/88977414710.pdfIn PDF document text
- https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/e49abbbc9485d9785be50958f956ca16/75085105283.pdfIn PDF document text
- https://www.dartmusicfestival.co.uk/wp-content/plugins/super-forms/uploads/php/files/04701af326549dd7d0e0f8793528b8bf/68565950036.pdfIn PDF document text
- https://www.zaantraining.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160efdeb6771fe---55255040103.pdfIn PDF document text
- http://lakehighlandsrw.org/clients/863582/File/11344777790.pdfIn PDF document text
- https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/46c75ff0c540b4cc521773b45d167882/69491294479.pdfIn PDF document text
- https://socialchangefactory.org/wp-content/plugins/super-forms/uploads/php/files/dc98f46e49b1905669d988cc2760395f/tezudire.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_off0000bed6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBED6 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d6ed.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD6ED | 10948 bytes |
SHA-256: 9b2e5d489aba43c45d3b16a9f64d559bc157331fa1c2eef893b39b4017966853 |
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font_02_sfnt_off0000f04e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF04E | 15700 bytes |
SHA-256: 7fa2a8fe8e969d0fd367b60e6871fb2b6bb3412d27e5140e7e2a561f1eaa340e |
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