MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm with numerous external URLs. The primary URL, 'https://midufefew.ru/123?utm_term=toefl+practice+test+pdf+vk', suggests a lure related to TOEFL practice tests, likely to deceive users into clicking through to potentially harmful content. The presence of many links on disposable hosting indicates a phishing or spamming operation.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
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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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://midufefew.ru/123?utm_term=toefl+practice+test+pdf+vk PDF link annotation
- https://zuzuxaze.weebly.com/uploads/1/3/4/0/134040629/minitiruzumem.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4477139/normal_6007e33cebaea.pdfIn PDF document text
- https://wawotisusuwo.weebly.com/uploads/1/3/2/7/132741293/8856459.pdfIn PDF document text
- https://lumigoxodavi.weebly.com/uploads/1/3/1/6/131606620/zoxujolumu.pdfIn PDF document text
- https://lowunidedalovel.weebly.com/uploads/1/3/1/3/131380213/toguwafineki.pdfIn PDF document text
- https://wonikisemuk.weebly.com/uploads/1/3/4/9/134902350/fcf098.pdfIn PDF document text
- https://nofevezim.weebly.com/uploads/1/3/4/7/134770192/6709657.pdfIn PDF document text
- https://fokomawirofuteb.weebly.com/uploads/1/3/0/9/130969657/wunew.pdfIn PDF document text
- https://vawudida.weebly.com/uploads/1/3/4/8/134890241/xutiku_varefis_zazadu_marupapufexiju.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4407729/normal_5fd1128c0d5ec.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://2ed9768e-82a7-41f7-bc91-4b86d8d7aa0f.filesusr.com/ugd/bdbd91_c38f3a93276e49349bee3e733873a1c7.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/d0fb3c97-7822-4674-bc99-14cce3fd989d/tefuxarejitile.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e6b8741c-e275-4348-ab08-dea109146c43/sogawamadoteluwolib.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/89711a27-857e-4b85-acfe-48f131dd2239/talawebitoxesapinukeri.pdfIn PDF document text
- https://994180ce-385f-4272-9833-4a204a825e0f.filesusr.com/ugd/ec0c41_65336b804f9441a69ecba91612bb9f3c.pdf?index=trueIn PDF document text
- https://c8f6a2ed-bc8a-4fd4-b26a-19707db7c4cd.filesusr.com/ugd/1cc7e8_0cc4501c50c845ebadce8ab5138853d0.pdf?index=trueIn PDF document text
- https://011f98f8-b45f-4578-a2fd-466b530f7845.filesusr.com/ugd/74e905_7268335471bf4718be1f1263c0c27f42.pdf?index=trueIn PDF document text
- http://sabozovitebem.rf.gd/44351070667.pdfIn PDF document text
- http://xikepilapap.rf.gd/41370344991.pdfIn PDF document text
- http://wivukirotodit.epizy.com/78723339928.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000fe86.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFE86 | 5224 bytes |
SHA-256: 0f98d811925ebd3565eea93794c015177f6e41d0a9dc95447ce94a5581543385 |
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font_01_sfnt_off00011060.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11060 | 16256 bytes |
SHA-256: bb2a55fb2ee2dc31ef20bef4e4487a948a91320878aa54b5a5b7f3edc258f8ca |
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font_02_sfnt_off0001416d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1416D | 16204 bytes |
SHA-256: 31aa257675234f953cb39254c73a0c002637764ec2691c470e0912636c3685cf |
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