MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a LOLBin command-execution lure. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
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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LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMANDExtracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
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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://xajibur.ru/strik?utm_term=success+in+clinical+laboratory+science+4th+edition+pdf PDF link annotation
- http://texivej.sportsontheweb.net/13169339511.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4494889/normal_6039bbbdcd112.pdfIn PDF document text
- http://pegoluzalep.22web.org/10358192795.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4481406/normal_5fdf31d58f08c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4415936/normal_604bb1c17760f.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4473023/normal_6008d01a3fcc0.pdfIn PDF document text
- http://tefuvawilutir.mypressonline.com/novecento_baricco_download.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4451742/normal_5fcbfe100e996.pdfIn PDF document text
- https://static.s123-cdn-static.com/In macro / runtime command snippet
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://033f1a72-e514-447f-b44b-9d234b37386c.filesusr.com/ugd/f05202_138053990dd24b1aaedbc281f34d0d41.pdf?index=trueIn PDF document text
- https://df1882fa-13c5-42f1-8438-577935b594b9.filesusr.com/ugd/91932b_02c2e6167c6a4596a526dd115bb0fccd.pdf?index=trueIn PDF document text
- https://9042e326-c85f-44e6-b9b6-0c206471fdba.filesusr.com/ugd/0d2fda_4fa9fe9f5e2142ecbd245cff1a47c484.pdf?index=trueIn PDF document text
- https://93bb5028-8b17-4c47-8ab9-f46a024b0e86.filesusr.com/ugd/041612_98a2b73159af41ab824e11c8e968a122.pdf?index=trueIn PDF document text
- https://3a00e800-a8eb-44ae-aafc-ae9aecab8e06.filesusr.com/ugd/1715bf_85cc5d1e3e5e4fdc9d9543d6b587477a.pdf?index=trueIn PDF document text
- http://namakanexir.atwebpages.com/how_to_do_wave_curls_with_flat_iron.pdfIn PDF document text
- https://7f58a6d3-5723-489e-a2bd-17fd91e1ddd5.filesusr.com/ugd/655495_1d6a044e0dec4151acc8f5b8bff5891a.pdf?index=trueIn macro / runtime command snippet
- http://jumebesatupa.epizy.com/vmware_windows_10.pdfIn PDF document text
- http://dizavinizekabos.rf.gd/acoustic_camera.pdfIn PDF document text
- http://tigovakidif.epizy.com/streamline_english_book_1.pdfIn PDF document text
- https://0793e221-2e7e-4176-aae8-4ff4b75d8f7a.filesusr.com/ugd/64bd79_85421e043e714f69a7501f86f5ade67c.pdf?index=trueIn PDF document text
- http://vajitefafuxuz.epizy.com/photogrammetry_books_free.pdfIn PDF document text
- https://caf0f927-206f-4b4e-aa34-0dd3da53679b.filesusr.com/ugd/83d902_8a5772d4117347639a2b7e001ed7c587.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_off0000dd29.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD29 | 5676 bytes |
SHA-256: 9877090f4a3d7d4ef3d0b1b1b455be203f140f041145b771e375719ef580e821 |
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font_01_sfnt_off0000f07e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF07E | 10832 bytes |
SHA-256: 2a78f482835f76965dd3b3475367a31a35053fc0f8c971a29260fd87e13815b7 |
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