MALICIOUS
244
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file contains a large number of embedded links, many of which point to external PDF files hosted on disposable domains, indicating a link farm or SEO manipulation scheme. One critical heuristic identified a link to known malicious redirector infrastructure. While no scripts were explicitly extracted, the nature of the embedded links and the ML classifier's high confidence suggest a malicious intent, likely to distribute further malware or engage in phishing. The ClamAV detection further supports its malicious classification.
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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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://crophysi.ru/123?utm_term=avant+garde+advertising+examples In PDF document text
- https://static.s123-cdn-static.com/uploads/4369519/normal_5ff00bce33038.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4445892/normal_5fd2f7d107983.pdfIn PDF document text
- https://balejumefem.weebly.com/uploads/1/3/0/8/130814467/nukegipijal_webas.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4460055/normal_5fd7989864464.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4427274/normal_5fc7a2d82b805.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4475571/normal_5ff7d6156f30b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4407818/normal_5fe7ae58e7cdf.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4474218/normal_6014cb04a3119.pdfIn PDF document text
- http://jeratojovu.66ghz.com/vcenter_5._5_update_3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369923/normal_5fd841ba6f23c.pdfIn PDF document text
- https://sotemupavunu.weebly.com/uploads/1/3/1/4/131413148/gunavip_dobakumur_pulowevafuzujal_fatirig.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4473632/normal_5ff585d980ad6.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://bojefej.epizy.com/44041405734.pdfIn PDF document text
- https://s3.amazonaws.com/magapeguwabe/14480236656.pdfIn PDF document text
- http://mibodezoboro.rf.gd/policy_and_procedure_template_for_nonprofits.pdfIn PDF document text
- https://s3.amazonaws.com/midaguvimabof/76551546271.pdfIn PDF document text
- https://s3.amazonaws.com/megodipewukitoj/financial_crisis_inquiry_commission_final_report.pdfIn PDF document text
- https://s3.amazonaws.com/wibadinavosunom/barbell_front_squat_form.pdfIn PDF document text
- http://moxutomib.rf.gd/navy_blue_jacket_manual_online.pdfIn PDF document text
- http://riramemixezu.epizy.com/70217804155.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_off0001c80e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1C80E | 5396 bytes |
SHA-256: 8dc44586fc8b13f29e7db4999ec92cf7bfcdbf0405cc30e79ec4c8cb5cd6ef22 |
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font_01_sfnt_off0001da5f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1DA5F | 12060 bytes |
SHA-256: ea14f31fa4ebb04a40a698c8234deac0cd9801de09e4cb1802c731dd98184562 |
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