MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was identified as malicious by ClamAV and an ML classifier. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The document body, though heavily obfuscated, appears to be related to a 'test bank' lure, likely intended to direct users to malicious websites.
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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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://leonvi.ru/strik?utm_term=leadership+hesi+2018+test+bank PDF link annotation
- https://cdn.sqhk.co/zedozomi/lK8GTe5/hearts_card_game_windows_8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4465145/normal_60310460c4d16.pdfIn PDF document text
- https://cdn.sqhk.co/falupuvevore/xFjjjaN/kojogumigagojaj.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4486763/normal_6041459482ac0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4423442/normal_601604772fded.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4387808/normal_5fcd9b2d3d704.pdfIn PDF document text
- https://cdn.sqhk.co/woxemumi/fjcjdji/xibekonel.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368474/normal_602f09030e7e4.pdfIn PDF document text
- https://cdn.sqhk.co/jesupasuzoku/9GuMtvA/mother_earth_foods_19th_street_parkersburg_wv.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://0dd0cd87-80d3-4eb5-b9c6-73c43c3a6fca.filesusr.com/ugd/f0b6b3_c0c7d598c9be459bb992d8561957878b.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/d656793b-0b87-49d0-933a-cdede0facce2/pofafopibuzazirorutamu.pdfIn PDF document text
- https://f635e5d9-31b1-4f19-b758-7a623be10181.filesusr.com/ugd/6cf0f5_d971b17aa53245dc9cf75366344ce8ab.pdf?index=trueIn PDF document text
- https://30f21d72-2b41-4965-a7bc-2abb02bf1ded.filesusr.com/ugd/47e66e_0fcc7f60372e4db7b84fabcf31a0bcbf.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/dc2a8e14-7c8c-4fde-89d5-54ad448d5a05/36706819973.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c21880df-2b78-4c1a-98e0-53eaa8d0bc9d/the_painted_bird_cinema_uk.pdfIn PDF document text
- https://93dbb2ad-f1e8-4c6c-adfd-2ef134399473.filesusr.com/ugd/df4650_228e1c08f820482587c6a4a6b6fcfd16.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/be494eb2-b759-4b41-b918-c189002438eb/how_to_connect_ilive_bluetooth_speaker_to_tv.pdfIn PDF document text
- https://98771922-91e4-4673-aa0d-7794f4435593.filesusr.com/ugd/b6aaa0_6c3061515fde4da6a70b2a266f0531a8.pdf?index=trueIn PDF document text
- https://153f2bed-3501-4ec5-9468-ed1987511f6d.filesusr.com/ugd/f67134_8ffd4556b64c4d15a9d317dcedb5f383.pdf?index=trueIn PDF document text
- https://83d12552-0bc1-4415-b221-1da25caacb9b.filesusr.com/ugd/1e11d0_fec50557be6849d29830a5b1464b089f.pdf?index=trueIn PDF document text
- https://550dfcec-0280-4316-a0d5-68b74a7a20b9.filesusr.com/ugd/f59309_360e3adb5e344b31916a00d970fee07e.pdf?index=trueIn PDF document text
- https://9ebe8999-295a-4f11-87dc-c96f3e1b46ff.filesusr.com/ugd/8de238_baf8a528193d451ab42ad020bbd36612.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_off0000d004.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD004 | 5680 bytes |
SHA-256: 7e57909aa594693d1b9245a002f707e2e09ac05866ccf59ebc0ca76d250daa87 |
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font_01_sfnt_off0000e34f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE34F | 11152 bytes |
SHA-256: 8bfa8f115edcbff3c2b18b54f761b4dbaab8e9ec31ea90388937f8fc779532c2 |
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