MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was identified as malicious by a machine learning classifier and ClamAV, flagging it as a phishing trojan. It contains numerous embedded URLs, many of which point to compromised websites or disposable hosting, suggesting a link farm designed to lure users to malicious content. The presence of these links and the overall structure indicate an attempt to distribute malware or conduct phishing attacks.
Machine Learning
- Nyx PDF Classifier malicious score 0.9968
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 farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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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://szzxwx.com/Upload/Upload/file/20219141423143606.pdf In PDF document text
- https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/b7af95d4360e6f5e7e180f56655bcd72/10931929250.pdfIn PDF document text
- https://silverlabpupsforsale.com/userfiles/files/gidebijevodug.pdfIn PDF document text
- http://villaturri.it/wp-content/plugins/formcraft/file-upload/server/content/files/161325171cd1d9---zugiterunijetanukik.pdfIn PDF document text
- http://snnet.kr/board_pds/fckeditor/2021/09/file/44053140450.pdfIn PDF document text
- http://krajinar.cz/soubory/files/31279189612.pdfIn PDF document text
- http://www.shjkyq.com/up_files/FCK/file/nimarepojekuren.pdfIn PDF document text
- http://z-him.ru/userfiles/file/rimutalagamexariluw.pdfIn PDF document text
- http://hauptlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/remixenakebevuvavine.pdfIn PDF document text
- http://anhuishangbiao.com/upload_fck/file/2021-9-12/20210912103248188607.pdfIn PDF document text
- https://alutat.com/data/file/7202258927.pdfIn PDF document text
- https://firmabudowlanawalczak.pl/web/uploads/files/ruzumuwizowanuxas.pdfIn PDF document text
- https://ysh.my/userfiles/file/92913160507.pdfIn PDF document text
- https://fgcrubochi.com.ng/ckfinder/userfiles/files/88028162872.pdfIn PDF document text
- http://nj-rshb.com/v15/Upload/file/202197138442140.pdfIn PDF document text
- http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/1613808f94348c---dorovobaporivesewuwuxid.pdfIn PDF document text
- https://villanakarin.com/userfiles/files/10172788246.pdfIn PDF document text
- http://www.mousumibanerjee.com/fckimages/file/modupozepuxizamejuwusuv.pdfIn PDF document text
- http://thanglong.vn-greenenergy.com/ckfinder/userfiles/files/kobesinur.pdfIn PDF document text
- https://vntdc.com/upload/fck/file/13080498747.pdfIn PDF document text
- https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/m33c0b8pc75bo7ejepkauop7fu/noriwabigogajut.pdfIn PDF document text
- http://dietmoiquangle.com/webroot/img/files/refewefolalujabisagemipaf.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=sd+card+format+android+appPDF 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_off0000dd51.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD51 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f568.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF568 | 10512 bytes |
SHA-256: ada73279d61df5bf413125667ad741e67468639ee40f2013aa04fc2aefc34971 |
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font_02_sfnt_off00010d47.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D47 | 17244 bytes |
SHA-256: f109b23869b8bd3b3ea9156d5b99cf3f03b1ee10f5af9bf81e4268c2a30e423f |
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