MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
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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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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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://vilenefex.ru/123?utm_term=mycobacterium+treatment+guidelines PDF link annotation
- http://naxiziwakeguzor.iblogger.org/50673190402.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/b269fdee-170d-4f5f-b7b1-37e77cf614ad/democratic_leadership_style_in_nursing_journals.pdfIn PDF document text
- https://a909b8fe-7c6e-4467-a5b6-92e64a2a5b5d.filesusr.com/ugd/65efca_ac6b27633eb54e9b80a33cb930343ee7.pdf?index=trueIn PDF document text
- http://luwaxilozaraxo.rf.gd/sat_algebra_practice.pdfIn PDF document text
- https://a32e93c2-1aa3-4149-af29-aa5d163ab988.filesusr.com/ugd/40336e_0191171e67094bacbe86ec0909f7673c.pdf?index=trueIn PDF document text
- https://8cff94d3-ecab-4ea5-ad27-d3e67d02fd32.filesusr.com/ugd/2813e2_cfe3803b45df4f2e814ee6ae27e3187b.pdf?index=trueIn PDF document text
- https://3d9856c9-ddaf-40ef-ab37-14107f3d3ee7.filesusr.com/ugd/938106_e3e2db84be764da5b31ff51cb0329ba4.pdf?index=trueIn PDF document text
- https://c6f55193-7475-4343-97dd-33cb3b141b6a.filesusr.com/ugd/808d8c_d5de4a827d6343e8853fe8da791623c9.pdf?index=trueIn PDF document text
- http://tijejawoporufil.epizy.com/13378785296.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/66fc2864-9072-4031-8e00-40f71c96fdb7/what_genes_are_on_chromosome_15.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/84ba1788-bae9-4fa7-befa-f7589857e492/19565798359.pdfIn PDF document text
- http://dixadenidufudu.epizy.com/angle_measure_to_decimal_degree_form_calculator.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0c5a945d-8c9d-4170-a5b2-c96cb66ec1de/man_hour_calculation_formula_excel.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6eb6dd40-0d8a-498c-8ebe-6596477768c9/vosezezifovofuwaxipan.pdfIn PDF document text
- http://kisomelug.rf.gd/watepisa.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/933bb12d-21ec-43f0-a3ba-2a5e503fbf3c/how_to_connect_a_mac_to_a_canon_wireless_printer.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fbbf1ca6-84ee-464c-bddd-4769af14feac/vubuxejekesuduwilobu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/994a25ab-66ea-408a-a971-9019c4efc02e/dell_precision_m4600_specs.pdfIn PDF document text
- https://bf23b77b-49a9-4bef-a898-a03cfb94aefa.filesusr.com/ugd/134172_9f1939ba3fcf4903a056df7edf9969d7.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/eb18377e-72c8-46ae-b78a-24712695ff87/16972996976.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f71d64c0-d186-422b-adbd-8855e196cb74/word_selection_is_locked.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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000171c9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x171C9 | 5508 bytes |
SHA-256: 847d7d89b3cff4dfb257f4274cbbfc43956d041f91256a7a3fe8dd508062a4ab |
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font_01_sfnt_off0001847b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1847B | 11756 bytes |
SHA-256: ad65e8290c0f9ff4e5a4516edcfa9c165de7b65d397b254607a84aff5e842ae5 |
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