MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file is a PDF containing numerous embedded links, many of which point to potentially malicious or unknown domains. The heuristic 'PDF_RANDOM_URL_LINK' and 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly indicate a malicious intent to redirect users to external sites. ClamAV detection as 'Pdf.Phishing.Trojan' further supports this assessment. The ML classifier also flagged this PDF with high confidence.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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 http://nextgenship.net/upload/file/20210901163049709577.pdf In PDF document text
- http://www.sandipmallick.com/fckimages/file/bapopulutawikarigos.pdfIn PDF document text
- https://dadrarad.ro/userfiles/file/xotewigisetuponuzekoti.pdfIn PDF document text
- http://abwmercury.com/uploads/files/6084112114.pdfIn PDF document text
- https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16130bf888c132---26730069685.pdfIn PDF document text
- https://war-old.its.vn/new/userfiles/file/62456442917.pdfIn PDF document text
- http://ty-universe.com/image/files/20210904_020321.pdfIn PDF document text
- http://julianina.de/upload/file/46340649632.pdfIn PDF document text
- http://electriccityusa.com/images/fck_uploads/file/35601129042.pdfIn PDF document text
- http://ambulatorioveterinarioilghirlandaio.it/userfiles/files/93342812089.pdfIn PDF document text
- https://saksisan.com/upload/ckfinder/files/lokude.pdfIn PDF document text
- http://aescantabria.es/upload/fckeditor/file///nuvutobo.pdfIn PDF document text
- http://modnyi-buket.ru/uploads/files/wokifugimejexamonakepuv.pdfIn PDF document text
- https://bakwanudang.com/contents/files/rigiwow.pdfIn PDF document text
- https://apz-arte.com/ckfinder/userfiles/files/81347518174.pdfIn PDF document text
- https://mimpi1pusat.com/contents/files/dafuzunalup.pdfIn PDF document text
- http://giaydantuongphongngudep.com/images/news/file/41688809635.pdfIn PDF document text
- http://ipllaser.in/uploads/35110246838.pdfIn PDF document text
- http://bkht.vn/userfiles/file/wonosasunaxaritexulimex.pdfIn PDF document text
- https://sunsetlearningcenter.com/userfiles/file/mojesesik.pdfIn PDF document text
- https://cornwallstaffagency.com/userfiles/file/nonefasutanom.pdfIn PDF document text
- http://loveperfectionschool.com/upload/file/40209433754.pdfIn PDF document text
- http://contextuae.com/resimler/files/19071509336.pdfIn PDF document text
- https://sakkestadbil.no/userfiles/file/16152872830.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=google+chrome+battery+drain+androidPDF link annotation
- 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_off0000cd24.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCD24 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000e536.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE536 | 17056 bytes |
SHA-256: efde70b6479b97b6da7de85cf5fb174e981a8192e732b8f2f39ffca618722f8d |
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font_02_sfnt_off00011191.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11191 | 10944 bytes |
SHA-256: 40a6ab6a30fe313f39af29503b61870f699c9d2e0e7fcf8a1c6ac4f0934f5d83 |
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