MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm, suggesting a phishing or malware distribution campaign. The heuristic 'SE_LOLBIN_RUN_COMMAND' also indicates the presence of command execution indicators within the document text.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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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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://huntic.ru/uplcv?utm_term=best+way+to+back+up+android+phone PDF link annotation
- http://bakineshr.az/ckfinder/userfiles/files/gubutorisikeguwizejeme.pdfIn PDF document text
- http://danies.ru/ckfinder/userfiles/files/62140575127.pdfIn PDF document text
- http://pixel-pro.ru/upload/file/92469856879.pdfIn PDF document text
- http://assessmentinsight.com/ckfinder/userfiles/files/vevoxamovobobuzev.pdfIn PDF document text
- http://pluimveebeurs.com/userfiles/file/138533825.pdfIn PDF document text
- http://zimmerei-possert.at/22979738218.pdfIn PDF document text
- http://sb-78.ru/files/file/641694359.pdfIn PDF document text
- https://cbdc.co/uploads/ckfinder/userfiles/files/molanux.pdfIn PDF document text
- http://matraholding.hu/images/userfiles/files/40978548477.pdfIn PDF document text
- https://www.ebenisterie-burette.com/ckfinder/userfiles/files/63739253319.pdfIn PDF document text
- http://charmingcurls.se/upload/file/jenifodog.pdfIn PDF document text
- https://aarushimukhwas.idealviews.com/userfiles/files/nonegenivuxogajabujepevan.pdfIn PDF document text
- http://mbjarrahi.com/UploadedFiles/New/file/62909215149.pdfIn macro / runtime command snippet
- https://naucharts.com/ckfinder/userfiles/files/82182112066.pdfIn PDF document text
- http://devitohomesorlando.com/userfiles/files/tosuxikavavarufuvorula.pdfIn PDF document text
- http://burbank.kopanramen.com/uploads/files/95875520678.pdfIn PDF document text
- http://varadimasszazs.hu/uploads/files/negubenagubujuwedutaze.pdfIn PDF document text
- http://hypotekaprezamestnancov.sk/res/file/gusedijilemetuv.pdfIn PDF document text
- http://fu-xin.tw/uploads/files/202109071700408093.pdfIn PDF document text
- http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613719e4c91d9---69526475141.pdfIn PDF document text
- http://uts.edu.co/portal/app/ckfinder/userfiles/files/85889127252.pdfIn PDF document text
- http://centroolosprato.it/userfiles/files/zulibonevaviwafajopomivog.pdfIn PDF document text
- http://www.binghan.my/userfiles/file/mogabakugumi.pdfIn PDF document text
- http://okna-stv.ru/userfiles/files/98611949693.pdfIn PDF document text
- http://newgrids.com/userfiles/file/53640271137.pdfIn PDF document text
- https://aarushimukhwas.idIn macro / runtime command snippet
- 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://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_off0000b07d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB07D | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000c88f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC88F | 15908 bytes |
SHA-256: 99766bd4c37fd1198f6162b05f4737dae5a5db627e4b8c633c184105a3551610 |
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font_02_sfnt_off0000f0fe.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF0FE | 11152 bytes |
SHA-256: 46960202c098bb52f399e52a666e267dd506cac35201575420d871fbf5d19937 |
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