MALICIOUS
244
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains numerous embedded links, many pointing to disposable hosting and redirector infrastructure, indicating a link farm designed to obscure malicious destinations. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' specifically flags a URL leading to known malicious infrastructure. The document body, though heavily obfuscated, suggests a lure related to 'Biogeochemical cycles worksheet answers', aiming to trick users into clicking the malicious links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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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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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://cctraff.ru/123?utm_term=biogeochemical+cycles+worksheet+answers In PDF document text
- https://gumomamomav.weebly.com/uploads/1/3/1/3/131398069/lelezebeza-ladawosururim.pdfIn PDF document text
- https://detaliwaka.weebly.com/uploads/1/3/4/3/134340587/taxitagowesipoluzu.pdfIn PDF document text
- https://wejapofi.weebly.com/uploads/1/3/4/5/134590092/zegaxu.pdfIn PDF document text
- https://lagidipivawe.weebly.com/uploads/1/3/4/3/134347483/f366e0406763c.pdfIn PDF document text
- https://pezujotage.weebly.com/uploads/1/3/4/3/134318684/de40c90.pdfIn PDF document text
- https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/vopisovaz.pdfIn PDF document text
- https://fewefemuge.weebly.com/uploads/1/3/4/3/134372507/cbede32a33.pdfIn PDF document text
- https://basedupapopulow.weebly.com/uploads/1/3/4/3/134344364/defaxiwogatisuda.pdfIn PDF document text
- https://kunobutos.weebly.com/uploads/1/3/4/2/134234797/04d0a4ec93f74.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/36a4bc3a-9804-4971-b4b7-8dd62ed5254e/beckmann_and_lings_obstetrics_and.pdfIn PDF document text
- https://static1.squarespace.com/static/5fc165e488c99b6d37aa9f7e/t/5fc564d74e98326c02c6adcc/1606771927891/8637935966.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ae92cbed-58ea-4b93-9af1-de5a27f83681/sikupi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4d896f61-dd82-44f8-8759-9b9eba17ddb7/24960036173.pdfIn PDF document text
- https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf0d4b4c4d833b8bc7a89/1606217941534/what_does_disillusioned_mean_in_chinese.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6c19c09e-0048-4a4c-8a6b-4b1f40e894ce/bafuvibowata.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/69804715-52f7-48ac-865c-01e451d2690d/70053073473.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_off0000fc8a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFC8A | 5520 bytes |
SHA-256: b3d8de62909dfe6eb50516cac55b84ec1bbd1c0c24cb1b1df9ce3d370d596663 |
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font_01_sfnt_off00010f3f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F3F | 10308 bytes |
SHA-256: c61ae279ba71fefba502532c0fdcc4808b5a4279b288e68f1f4c58581514fdca |
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