MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a large number of external links, many pointing to disposable domains, indicative of a link farm or SEO spamming operation. ClamAV and ML classifiers identified this PDF as malicious, specifically a phishing or trojan variant. While no scripts were extracted, the PDF structure and numerous external URLs suggest a malicious intent to redirect users to potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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://zajinet.ru/wix?keyword=classifying+triangles+worksheet+pdf PDF link annotation
- http://jugepawe.medianewsonline.com/vomabawavugi.pdfIn PDF document text
- http://terugate.mypressonline.com/tabla_puntaje_psu_2021_ciencias.pdfIn PDF document text
- https://latapelubatute.weebly.com/uploads/1/3/5/9/135960370/8328e.pdfIn PDF document text
- https://zowutopukanujim.weebly.com/uploads/1/3/4/2/134235103/416ea2bcee53ee.pdfIn PDF document text
- http://tagoturuluro.medianewsonline.com/physiology_of_biliary_system.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/5d41b724-a99f-46e6-bdc6-9c02f14fd1bd/programa_aprendizajes_clave_segundo_grado_primaria.pdfIn PDF document text
- http://zedebegeku.myartsonline.com/descargar_plano_metro_barcelona.pdfIn PDF document text
- https://7ae774ad-b64d-4473-a0b1-aa0db1e39e83.filesusr.com/ugd/3e7897_649a7acf4d07425596d7ee2010a03631.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/591be0e8-e347-4dd6-840b-0b94ee27f87c/percy_jackson_2_cast.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0582fa97-7ec7-4b7b-8d4c-a43a3bfbae69/what_safety_equipment_is_required_on_my_boat.pdfIn PDF document text
- https://d12e84a0-9808-45da-82c6-613dfe540d1b.filesusr.com/ugd/dc8a8e_b6212935a91740cfb83939371223bb22.pdf?index=trueIn PDF document text
- http://tagijonegularol.myartsonline.com/application_of_gis_in_geology.pdfIn PDF document text
- https://1c514d3f-4aca-4c14-a2cc-94ef866bc6c7.filesusr.com/ugd/860217_1d992a70da8f449a88fe3c78f59e7c5b.pdf?index=trueIn PDF document text
- https://d4180a97-8dd0-4bf1-9e2f-d1b128d1a64d.filesusr.com/ugd/ae059d_cb8cb23f93ca45858802169fcc3f110b.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/8ce85524-6341-4447-bbee-46cb4ad47e60/galaxy_s9_plus_charger_walmart.pdfIn PDF document text
- https://a1f0096d-76f5-425c-b826-5ccbd312c1bc.filesusr.com/ugd/8f8c07_d585e912b8464cc9afb56a9d7bd1d3c3.pdf?index=trueIn PDF document text
- https://167c2301-eccc-4e3a-a609-38a4f17b9bf8.filesusr.com/ugd/b1dabf_de2e1772a2f0480781d87913ac8a1a4f.pdf?index=trueIn PDF document text
- https://aa514bbb-a96e-4bc9-8ff3-0ca2edd1104f.filesusr.com/ugd/3fc21f_b3fc6de54cc84a4caa8cd99134a956ca.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/bdccc94b-51ca-4c8f-bfbd-affb5b9fac8c/htc_sensation_xl_factory_reset.pdfIn PDF document text
- https://0029a690-d003-4268-bdc7-e74daa5a0415.filesusr.com/ugd/a4b355_4ef9eedd007e4c9a9222e211cae92cb8.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_off0000ddbd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDDBD | 5464 bytes |
SHA-256: bea6dff8ebfb0ca15f2b27d23dbb6735b578a80a2e5bbe0f00d5b9f820ca7e57 |
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font_01_sfnt_off0000f068.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF068 | 10608 bytes |
SHA-256: 80c0004d9ac45380cc1a5a3560c76dc60caa507e8d711e5b60d26ea08fd59f96 |
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