MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file exhibits characteristics of a phishing lure, specifically designed to appear as a document related to anatomy and physiology. It contains a large number of external links, many of which point to other PDFs, suggesting a link farm or redirector strategy to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to lead users to download further malware or engage in phishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
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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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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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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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://crysiq.ru/pbw?utm_term=anatomy+and+physiology+terms+and+definitions+pdf PDF link annotation
- https://static.s123-cdn-static.com/uploads/4423780/normal_5feba2705f608.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4486522/normal_602b534045797.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4490133/normal_601fe07a0ad53.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4384045/normal_5fce228264414.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4382790/normal_5fc8303778661.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4408324/normal_6007e5ed0a917.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4405184/normal_60622025478d8.pdfIn PDF document text
- https://fasadosuz.weebly.com/uploads/1/3/4/0/134012998/24b7d71f8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4446925/normal_604742f0b3d30.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4386076/normal_5fdc3bfc6ced8.pdfIn PDF document text
- https://vejuxafesopekub.weebly.com/uploads/1/3/6/0/136010302/6ad071a39c0.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4408583/normal_60035483668c1.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4376610/normal_5feb281b31d28.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4387218/normal_5ff5f96b16230.pdfIn PDF document text
- https://morimisinasezub.weebly.com/uploads/1/3/1/8/131856414/jotapufowix.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4423757/normal_604af3165c24c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365659/normal_60543f1ea5f9a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368492/normal_60446ab152edf.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/ff82482e-088c-4327-a32a-69a4375363c5/xopuwivozefejemafat.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f72aaa19-2f3f-40f4-a947-b12dad6406f6/the_stranger_albert_camus_plot_summary.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7da4a307-bf78-4f1d-a918-f1d12f396431/libro_de_historia_de_mexico_secundaria_3_grado.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_off0000e1d5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE1D5 | 5544 bytes |
SHA-256: ec1e85c409dac2768b615c04cce5419aa9fbacdef4761019dac3c1d12f8adc78 |
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font_01_sfnt_off0000f491.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF491 | 9988 bytes |
SHA-256: aed01cb53c7d9a0e0a5dd9c521776d3149a87d53d22d904f72b532dc63963e82 |
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