MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains heuristics indicating it is malformed and contains external URIs, suggesting it is designed to redirect users. The presence of a 'download button' heuristic further supports a lure-based attack. While no scripts were explicitly extracted, the ML classifier and ClamAV detection strongly indicate malicious intent, likely involving the download of a second-stage payload from one of the embedded URLs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9920
Heuristics 7
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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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Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTHA PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://zajinet.ru/strik?utm_term=asus+rt-n66u+power+adapter PDF link annotation
- http://visiblawty.com/rezirevuxorexeslhdj8.pdfIn PDF document text
- http://mokenolovulonom.medianewsonline.com/allegiant_reading_studios.pdfIn PDF document text
- http://avto-trokot.xyz/android_9._1_huawei_p_smart7prmv.pdfIn PDF document text
- http://varnisvakq.ru/how_to_know_if_your_a_sun_moon_and_rising_sign6hrkp.pdfIn PDF document text
- http://bukawavado.medianewsonline.com/tusufe.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4481819/normal_6008076d45f4c.pdfIn PDF document text
- http://creditactive.info/tomefopewivl2ynd.pdfIn PDF document text
- http://vasakuso.sportsontheweb.net/type_2_diabetes_mellitus_2020.pdfIn PDF document text
- http://vopugixeroramox.medianewsonline.com/46963849392.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4405197/normal_602d0247a3a4d.pdfIn PDF document text
- http://bitcoins-profits.com/bedobibaue13h.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4386852/normal_603a3e470e44a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369493/normal_602a5566d496f.pdfIn PDF document text
- http://vejuwetuk.mypressonline.com/totexuxazukeliguranapevo.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://204833c8-abda-4421-8777-5048ee7dd919.filesusr.com/ugd/e30b7a_a9f2375663234cc5b02d858a70a85bd1.pdf?index=trueIn PDF document text
- http://ruronegiseko.atwebpages.com/66325924155.pdfIn PDF document text
- http://palexibibiw.atwebpages.com/dadumawawenubulezojijus.pdfIn PDF document text
- http://vefodipox.myartsonline.com/73367432879.pdfIn PDF document text
- https://204833c8-abda-4421-8777-5048ee7dd919.filesusr.com/ugd/e30b7a_44279619c5794842b347d074a3c1d1f1.pdf?index=trueIn PDF document text
- https://6e7ef639-f89a-4701-86f9-710a836f1183.filesusr.com/ugd/12745a_f0bfa1c13e9c4f309362cc6562990641.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/jalasilunaz/rojupukozonubukitukodu.pdfIn PDF document text
- https://5e6d3f51-9b35-4a29-baf4-1f036254a461.filesusr.com/ugd/99a8f2_30930e4240734f42832f0ac7e56b0a13.pdf?index=trueIn PDF document text
- http://fufudaloxola.onlinewebshop.net/muxisujageliwifuga.pdfIn PDF document text
- https://s3.amazonaws.com/genedesowul/35098264746.pdfIn PDF document text
- https://ad9e3d1f-bb22-46ca-892e-b6aa3325a756.filesusr.com/ugd/837d34_c9807c8934b7460080a31401d6e7e448.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/kakekojezutok/autoclave_user_manual.pdfIn PDF document text
- https://s3.amazonaws.com/fedojigudaj/vewiruzusujiga.pdfIn PDF document text
- https://s3.amazonaws.com/jezaxojipevu/gikiroxetuxozimexabusi.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
- https://savannah.gnu.org/projects/freefont/In PDF document text
- http://www.gnu.org/licenses/In PDF document text
- http://www.gnu.org/copyleft/gpl.htmlIn 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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000fc5c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFC5C | 6424 bytes |
SHA-256: 50759c40df67ec181331d37bc16259f4db20c39507a2c7d18444f96545433770 |
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font_01_sfnt_off00010c3c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C3C | 5188 bytes |
SHA-256: 1712f97e9d0abce32ffeef0bbee777eebd1f02a7a816aeaf8b12ab63161fbdcd |
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font_02_sfnt_off00011e06.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E06 | 11088 bytes |
SHA-256: 7026615d3443b3acd238ccd440e0b486a66141f32a66333e8039473cf81e0882 |
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font_03_sfnt_off000143e4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x143E4 | 16208 bytes |
SHA-256: 560e11d5da3ed60647d844d0127c34f4fbbc0b68999cbe35161ddcd790341c9f |
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