MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm pointing to compromised CMS uploads and disposable hosting, suggesting a phishing or malware distribution scheme. The embedded URLs, such as 'https://chcial.ru/uplcv?utm_term=open+7z+files+android', are likely used to redirect users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
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 https://chcial.ru/uplcv?utm_term=open+7z+files+android PDF link annotation
- https://ferest.ro/imagini_ws/98223538365.pdfIn PDF document text
- https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b515dc1eb0---zagufekamilelirawufov.pdfIn PDF document text
- https://swiz.eu/files/editor/54993441525.pdfIn PDF document text
- http://tuderprogettazione.it/userfiles/files/gadejevilozudaxu.pdfIn PDF document text
- http://ned.ru/uploads/files/tupimesijabapigo.pdfIn PDF document text
- http://onlytech-tunisie.com/userfiles/file/bebikix.pdfIn PDF document text
- https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/161413ae138487---zawabu.pdfIn PDF document text
- https://birudongker.com/contents/files/68388626876.pdfIn PDF document text
- http://stphilomenaonline.org/userfiles/file/wopitusefosolu.pdfIn PDF document text
- http://pierrevillers.fr/mairie_files/file/72375828517.pdfIn PDF document text
- http://snnet.kr/board_pds/fckeditor/2021/09/file/23189921700.pdfIn PDF document text
- http://fishingas.com/userfiles/file/suzuluwasiloser.pdfIn PDF document text
- http://www.serge-valentin.net/ckfinder/userfiles/files/4525507306.pdfIn PDF document text
- http://metrominicabs.com/survey/userfiles/files/71520850228.pdfIn PDF document text
- http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/f30mlhb90br29aic24f0bp88j4/zogagi.pdfIn PDF document text
- http://cokhihoangvinh.com/uploads/userfiles/file/mubogeromovisiremenudewes.pdfIn PDF document text
- http://www.w.radeton.cz/ckfinder/userfiles/files/gozoxunumir.pdfIn PDF document text
- https://nsaimmigration.com/userfiles/file/jokanigugeguvuvizixa.pdfIn PDF document text
- http://vlajamo.cz/images/file/76132541.pdfIn PDF document text
- http://racecross.com/upload/edito_fckeditor/file/95746846136.pdfIn PDF document text
- https://growlocals.com/wp-content/plugins/super-forms/uploads/php/files/1310f2ee06a974a3762820a897111157/kafigutegebowoxedekap.pdfIn PDF document text
- https://ln80.cn/filespath/files/20210917050536.pdfIn PDF document text
- http://recruiters-zone.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140abbc98e5d---fezesowenisubav.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_off0000cee4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCEE4 | 19636 bytes |
SHA-256: a67c156e7e96280a1385a2c48a32ed1681cd9bbccffe3015bbecbc72ede93adf |
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font_01_sfnt_off00010218.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10218 | 10528 bytes |
SHA-256: 6bce9023bd88485027df49c58e1ef5f3509f1fe507ba8b9626da1b8f30cccf99 |
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font_02_sfnt_off00011a46.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A46 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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