MALICIOUS
254
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous links designed to redirect users to external websites, a common tactic for phishing or malware distribution. Heuristics indicate it's a malicious redirector and part of a link farm, suggesting a phishing lure for free downloads. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9993
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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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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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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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://crophysi.ru/123?utm_term=automotive+grade+linux+vs+android In PDF document text
- https://static.s123-cdn-static.com/uploads/4484631/normal_5ff88cdcc020a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4450043/normal_60399b1bec7e3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4421613/normal_603572b0df090.pdfIn PDF document text
- http://reabook.online/647471954446ok45.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383806/normal_606bdb552e0f4.pdfIn PDF document text
- http://good-production11.site/418332129151aeb7.pdfIn PDF document text
- http://lyudi23.ru/jibezi8msni.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4410443/normal_5fc64343dd8f7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373757/normal_606a608fec2bf.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4489429/normal_5fe80ab92cf92.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4502236/normal_6040587fd13d9.pdfIn PDF document text
- http://pinerapidsrr.com/biometric_voting_system_pptlfcp6.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4417139/normal_6000cbc236fad.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/tazibabebamep/lijukuzifa.pdfIn PDF document text
- https://s3.amazonaws.com/dewutexorob/77187057108.pdfIn PDF document text
- https://c96d0889-97fb-4213-90a4-a08ae01970e6.filesusr.com/ugd/ed32f2_b377e97f1ccf46679675fb6d002b9b60.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/batiku/siwaj.pdfIn PDF document text
- https://ebba3e40-d49f-4cc8-b137-373bb1124918.filesusr.com/ugd/384ea4_d91fcf6ec23344d781c92f87ecebc0c2.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/tinezedu/dimijopusigisoredo.pdfIn PDF document text
- https://s3.amazonaws.com/najubu/browsec_free_for_firefox.pdfIn PDF document text
- https://7f58a6d3-5723-489e-a2bd-17fd91e1ddd5.filesusr.com/ugd/655495_efa1dd7e85b94ab5aa8d5076070c3105.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/zuguvoxoki/71479673403.pdfIn PDF document text
- https://7dad073a-5858-4d13-bf35-a645d3acb044.filesusr.com/ugd/71e439_b31c62009009499688c9c6fec113986b.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/vezumobigodub/47499286188.pdfIn PDF document text
- https://1ec9b6e7-17eb-4e1e-a994-ba5ce4cbdb7c.filesusr.com/ugd/d4a9d6_db6cb9ae869f4d4fa4e2550b367c683b.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_off0000f590.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF590 | 5260 bytes |
SHA-256: 821e32fab8b23749f66f057e88fcc97371dc690c2cb67a4db3f254ce141a94c9 |
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font_01_sfnt_off00010765.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10765 | 11148 bytes |
SHA-256: 00f5d9b553721e364ed41ce19925f72b44f870d2d0e1489c72776173ea902e28 |
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