MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing or trojan. Heuristics indicate it contains a large number of external links, suggesting it's part of a link farm designed to drive traffic to various websites. The document body, though heavily corrupted, contains keywords related to exercises and the authoring application, reinforcing the lure.
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/award?keyword=spinal+decompression+exercises+pdf PDF link annotation
- https://malugeko.weebly.com/uploads/1/3/1/6/131636988/patutojika.pdfIn PDF document text
- https://rekizutor.weebly.com/uploads/1/3/0/9/130969391/zadetalewiboduj_xogoditotabizu_tirosuzama.pdfIn PDF document text
- http://midunetojonawiw.mywebcommunity.org/abstract_reasoning_questions_and_answers_with_explanation.pdfIn PDF document text
- https://sakixuso.weebly.com/uploads/1/3/4/4/134488330/6388112.pdfIn PDF document text
- https://romuxejis.weebly.com/uploads/1/3/4/8/134887308/dolulej_tezotetu.pdfIn PDF document text
- http://vijevejumozugim.sportsontheweb.net/16975352647.pdfIn PDF document text
- http://ru-payment.casa/bisigazedh6twg.pdfIn PDF document text
- http://mexawolin.medianewsonline.com/97007871840.pdfIn PDF document text
- http://profibrend.ru/hydrological_cycle_worksheetvw3md.pdfIn PDF document text
- https://pukegivox.weebly.com/uploads/1/3/1/8/131856392/tubotanawotaji.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/c244acaa-cee5-499c-8c9a-1a32270538fe/conflict_resolution_scenarios_in_the_workplace_role_play.pdfIn PDF document text
- https://4c5ad993-366d-4b3a-aa99-9b6f56583180.filesusr.com/ugd/01e791_ec934d185700431bbcefdd06cba7c3ed.pdf?index=trueIn PDF document text
- https://aefb6378-f3ca-470a-b9d2-22936542d087.filesusr.com/ugd/fe129c_f0f235cd2b934ea8a9256c83d9d7078b.pdf?index=trueIn PDF document text
- http://gudukiderunusu.myartsonline.com/89502387424.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/bb0038b1-c827-4dd4-9337-961875ba473f/are_there_vr_movies_for_ps4.pdfIn PDF document text
- http://vowojuxibaxo.myartsonline.com/all_of_me_john_legend_lyrics.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/05007970-1ed5-4f79-89af-594a0b2f3809/russell_hobbs_6_litre_electric_pressure_cooker_recipes.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/877283bc-e2f2-47a3-a121-8a84bca0b7f7/how_to_interpret_ols_regression_results_stata.pdfIn PDF document text
- https://03a45e23-20c9-4b13-8d21-50c2609e56df.filesusr.com/ugd/502f3d_d1293a5495484ad1ae392970c3d136b6.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/26b1ec8c-afb4-4610-aa32-11fb93d98752/66520308206.pdfIn PDF document text
- https://c02a3fa2-970f-4384-b4fa-7a60184a1b73.filesusr.com/ugd/1da3fe_b19df75ff1f24da2aae6c6ec5fbe9368.pdf?index=trueIn PDF document text
- https://921790ca-7b53-43bd-a25d-275d6f056404.filesusr.com/ugd/9d24cb_1aaa97bd3e4c43148ad43abca105d597.pdf?index=trueIn 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_off0000e7bf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE7BF | 5472 bytes |
SHA-256: c6bc753ecf9910a75754b09da6693a3769aa883d2c6c5d77949af75069f56926 |
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font_01_sfnt_off0000fa48.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFA48 | 10836 bytes |
SHA-256: f81852e7cfce3e1d2ef9074f8531a7f9dc789cb1e4754871c954be3cb0ce1188 |
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