MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs, many of which point to compromised websites or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. The presence of multiple external URIs and a link farm on disposable hosting supports this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9989
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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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://coretry.ru/uplcv?utm_term=get+auto+instagram+followers PDF link annotation
- https://oilbasaro.com/web/images/ckfinder/files/20210913220823.pdfIn PDF document text
- https://www.kiemtoandongnghi.com/public/plugins/ckfinder/userfiles/files/duvanowajibot.pdfIn PDF document text
- https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/53f609a1025ffef24231090cfdddd441/64755579481.pdfIn PDF document text
- https://onhimalayas.com/ckfinder/userfiles/files/13709484553.pdfIn PDF document text
- http://jkbprivateiti.com/userfiles/file/fijodoj.pdfIn PDF document text
- http://wsm.hk/images/uploadfiles/file/sovijimerupu.pdfIn PDF document text
- http://epilia.com/upload/FCKEditorfile/tatisotekunoviwona.pdfIn PDF document text
- http://karinameal.ru/imgdish/files/dodeboxogi.pdfIn PDF document text
- https://www.sudoku-cool.com/ckfinder/userfiles/files/pupokumumimugemikutobum.pdfIn PDF document text
- http://botosani.ro/img/uploads/file/jukafebuj.pdfIn PDF document text
- https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/161304f75d2b81---vajufan.pdfIn PDF document text
- https://www.poolsrus.com.au/application/third_party/ckfinder/userfiles/files/wejawikizonevajefipi.pdfIn PDF document text
- http://cartopack.be/Images/file/xijolalifajesuj.pdfIn PDF document text
- http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/8779d7e93830207e40d76ccc717dc037/ziloveporeze.pdfIn PDF document text
- https://megashina24.ru/files/files/41711171619.pdfIn PDF document text
- https://luckyfood.itweald.com/uploads/files/613236a6e11ad.pdfIn PDF document text
- http://henskeschildersbedrijf.nl/upload/fitewotilowigodiw.pdfIn PDF document text
- http://phongthuyphatloc.com/luutru/files/42683038884.pdfIn PDF document text
- https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/161350d559fb15---1395117565.pdfIn PDF document text
- https://rsun.pro/admin/ckfinder/userfiles/files/70327630789.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_off0001083c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1083C | 18640 bytes |
SHA-256: b48cb72976e5ee7ca6ebe80fc4cdc83947669300c464f4e46f34b80d78aa5a59 |
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font_01_sfnt_off000138f2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x138F2 | 10780 bytes |
SHA-256: d0bd6322e1af24c85da93d94315406841f8677c4259cf8c432dfbb32828daae6 |
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font_02_sfnt_off000151de.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x151DE | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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