MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains a link farm pointing to numerous external PDF documents, with one primary URL being `https://jumiwimov.ru/123?utm_term=kra+appraisal+form+sample`. Heuristics indicate this is a link farm on disposable hosting, and ClamAV detection confirms it as a phishing trojan. The ML classifier also strongly flagged this PDF as malicious.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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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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://jumiwimov.ru/123?utm_term=kra+appraisal+form+sample PDF link annotation
- https://cdn-cms.f-static.net/uploads/4369664/normal_602e9836e2f60.pdfIn PDF document text
- https://kujoposa.weebly.com/uploads/1/3/1/4/131453526/e406666.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4470839/normal_6011cffb1a196.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4402503/normal_6023491c78962.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379374/normal_604ca51596541.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4411701/normal_6058f54049c69.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4406216/normal_5fe7cb70ab63e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4392439/normal_606e7e2a20858.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4445749/normal_5ff3d07be0074.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4461249/normal_602bf603bd903.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4410965/normal_5fc7ddd89b86e.pdfIn PDF document text
- https://fizijoju.weebly.com/uploads/1/3/0/8/130814030/favurenabetomuw.pdfIn PDF document text
- https://static.s123-cdn-static-d.com/uploads/4422884/normal_60b6e37dba516.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375887/normal_606cd074b5c3a.pdfIn PDF document text
- https://tudasuli.weebly.com/uploads/1/3/4/4/134403402/wibakopimo.pdfIn PDF document text
- https://bejofiba.weebly.com/uploads/1/3/7/5/137501455/5545146.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4456391/normal_6061018799564.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://kipizasuzeda.pbworks.com/f/perfumes_the_a-z_guide_2018.pdfIn PDF document text
- http://wuranosa.pbworks.com/f/26263625539.pdfIn PDF document text
- http://lekuzax.pbworks.com/w/file/fetch/144419187/do_blue_dye_tests_always_have_a_faint_line.pdfIn PDF document text
- http://sodopateduke.pbworks.com/w/file/fetch/144426267/muginaderomififuse.pdfIn PDF document text
- http://gupiguna.pbworks.com/f/53945494176.pdfIn PDF document text
- http://rimikupababo.pbworks.com/f/4595964766.pdfIn PDF document text
- http://jesababa.pbworks.com/f/kadoxukarewogufik.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_off0000ed6c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED6C | 5016 bytes |
SHA-256: 737ed1ba51c6c757f63b33be49376ba5a54aca732ad24a4d5d5a0a5b1ed5b968 |
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font_01_sfnt_off0000fe68.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFE68 | 11108 bytes |
SHA-256: efceb7eb76357304f672a70af00d9017d2ba1238bf86953f78c9217c6833b19f |
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