MALICIOUS
244
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a large number of embedded links, many of which point to disposable hosting and redirect to malicious sites, as indicated by the 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' heuristics. The primary malicious URL identified is 'https://yafferge.ru/strik?utm_term=how+to+write+a+college+essay+about+myself', which is likely used for phishing or malware distribution. The ML classifier and ClamAV detection further support the malicious nature of this document.
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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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://yafferge.ru/strik?utm_term=how+to+write+a+college+essay+about+myself In PDF document text
- https://gojolukok.weebly.com/uploads/1/3/4/4/134455450/lobumadukevazezevi.pdfIn PDF document text
- https://fapovodulutob.weebly.com/uploads/1/3/4/3/134361236/74b4945a.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4446034/normal_5ffbdd0dd0b35.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4408177/normal_602b3e9eb7059.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4495387/normal_5fdd766d3cb06.pdfIn PDF document text
- https://gesogakit.weebly.com/uploads/1/3/4/5/134581759/274881.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4450430/normal_605f56c91d98f.pdfIn PDF document text
- https://ridakikasidom.weebly.com/uploads/1/3/0/7/130739592/nimunizu-bipewedebuxi.pdfIn PDF document text
- https://toguxobuse.weebly.com/uploads/1/3/4/9/134902292/wadagiwinunore_gosijemamofixo.pdfIn PDF document text
- https://pifavakibapel.weebly.com/uploads/1/3/0/8/130814246/5596763.pdfIn PDF document text
- https://figedojopijobe.weebly.com/uploads/1/3/4/7/134769561/dubiravim.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4461744/normal_60109e5933183.pdfIn PDF document text
- https://wegetifadozapuf.weebly.com/uploads/1/3/1/6/131637062/4b1385c32e7.pdfIn PDF document text
- https://luvupomadimudux.weebly.com/uploads/1/3/4/3/134350134/xibusukoxif.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/52bcbd69-2027-42ae-b0f5-9271cfd2d386/suruduzekadujowuvopive.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8cb00a2b-0cb0-4b54-8dd9-6f8954370f37/14445980207.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5bdbd5a3-bac9-4237-8aa4-affcbf52e088/ruger_lcp_lasermax_battery_change.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/cb63d9ae-bf90-4809-8d7b-4c04615286bd/pakefukugelo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2f76f643-72f7-4171-bb03-ec7809835ffa/ejercicios_de_comprension_lectora_segundo_basico.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8f5dcb17-87b1-4438-b711-114b2aa4dd18/civil_engineering_materials_list.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d9273975-4db7-4e3f-8cc1-21762fbdca4e/32619052225.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/98adc30e-c43b-4b03-a67a-6b8e43e90b9c/ximev.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6544a868-e992-48ed-b327-08cb3257cfb5/how_to_change_keurig_water_filter_k200.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_off00018297.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x18297 | 5496 bytes |
SHA-256: ed1c5c178cec98317214146947782c27ef4cfdb26d9b8bc957f4bd7851fe29ec |
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font_01_sfnt_off0001954a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1954A | 10752 bytes |
SHA-256: 184bb0f5154f4a91fe9b131a16324551f361478db898ccf1b960215359dc08f5 |
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