MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is a PDF file flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains numerous external URIs, many of which are part of a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The presence of a 'download button' heuristic further supports the lure-based attack pattern. While no scripts were explicitly extracted, the PDF structure and external links indicate it likely serves as a dropper for a secondary payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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 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://krisoc.ru/uplcv?utm_term=hacked+pes+2021+apk PDF link annotation
- http://hondasushi.com/uploads/files/saguseruwovubiz.pdfIn PDF document text
- https://maintogelonline.info/contents/files/nusinabitojajap.pdfIn PDF document text
- http://julianina.dk/upload/file/duzuduzanago.pdfIn PDF document text
- https://gymlesgeants.com/upload/editor/file/40770040849.pdfIn PDF document text
- http://hk-sai.com/ckfinder/userfiles/files/ganujenugepuv.pdfIn PDF document text
- http://popmetre.com/news/files/zidopo.pdfIn PDF document text
- http://grandwatergatehotel.com/upfile_hotel/files/kefem.pdfIn PDF document text
- https://onsale.social-push.cc/data/fckeditor/files/xedajavetididuvev.pdfIn PDF document text
- http://apothepharma.com/upload/files/zuvekerivover.pdfIn PDF document text
- http://baoveantam.info/upload/files/19687363406.pdfIn PDF document text
- http://www.trisad.kz/ckfinder/userfiles/files/96218403507.pdfIn PDF document text
- http://deborahkay.com/ckfinder/userfiles/files/vudulekozirar.pdfIn PDF document text
- http://happy-land.hu/editor_up/sevumedepatekusasebitabip.pdfIn PDF document text
- https://taptigrihnirman.com/singhania/downloads/file/40211941621.pdfIn PDF document text
- https://intersensor.ro/v2011/Files/fck_upload/file/8058775283.pdfIn PDF document text
- http://gallery4walls.com/upload/editer/file/mamafekifijikeduve.pdfIn PDF document text
- https://sthouseluxury.com/upload/files/siteferodusujowuforudo.pdfIn PDF document text
- https://zhongzing.com/uploads/files/202109151202133688.pdfIn PDF document text
- https://nedimgame.com/calisma2/files/uploads/xegepojifezatudurix.pdfIn PDF document text
- http://www.companyforte.com/imagenes/editor/file/64622190801.pdfIn PDF document text
- https://vildmarksjagt.dk/userfiles/file/49379302154.pdfIn PDF document text
- https://alley.52886.tw/uploads/files/purefovuxegaxakejuvomik.pdfIn PDF document text
- https://qwert5.com/psum/admin/userfiles/file/91745410395.pdfIn PDF document text
- http://e-hematologica.com/users/file/pevafipo.pdfIn PDF document text
- https://www.mediawerf.nl/bundles/store24backoffice/ckfinder/userfiles/files/22461846530.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
- 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_off0000c7e3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC7E3 | 17080 bytes |
SHA-256: 8e21a6bee90171a7be13fc15363fa4d9f5432ad9239b07c8f322a50c7f00127d |
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font_01_sfnt_off0000f436.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF436 | 10324 bytes |
SHA-256: 4c212246c8861b97f25906787e49648a251239efda6c222dfb82bc4a47ea0281 |
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font_02_sfnt_off00010bb0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10BB0 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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