MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The ML classifier and ClamAV detection strongly indicate this PDF is malicious. It contains numerous external links, many pointing to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users. The presence of embedded URLs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicate the primary function is to lead users to malicious sites, likely for phishing or further malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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://huntic.ru/uplcv?utm_term=free+internet+for+android+phones PDF link annotation
- http://pibar.tw/uploads/files/202109050711466367.pdfIn PDF document text
- https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/2856ce39fb78c6525e72bd0747473af9/59640683567.pdfIn PDF document text
- https://treasurehunterdetectors.solar-ovens.net/ckfinder/userfiles/files/7741738368.pdfIn PDF document text
- http://cistenivytahu.cz/upload/file/dorusiwisol.pdfIn PDF document text
- http://abwhopewell.com/uploads/files/44883141633.pdfIn PDF document text
- https://bachson.net/upload/file/sodevimifuxikiwegegomemaf.pdfIn PDF document text
- https://avantkart.com/wp-content/plugins/super-forms/uploads/php/files/i4uvdfq5o0u633gov15os1a00u/jemulivugewotumifufenida.pdfIn PDF document text
- http://hyunshin.net/userfiles/file/vibugikewijami.pdfIn PDF document text
- http://congtrinhnhaviet.vn/upload/files/63380920663.pdfIn PDF document text
- https://y3stwk65l-mn9.com/contents/files/miduravukitilukisowaj.pdfIn PDF document text
- http://fasson.vip/images/editor/files/29288475165.pdfIn PDF document text
- https://gonguyenkhoi.vn/upload/files/84634065841.pdfIn PDF document text
- https://infotechsystemsonline.com/ital/www/img/file/13575713954.pdfIn PDF document text
- http://kawoka.com/userfiles/file/54536474327.pdfIn PDF document text
- http://el-system.jp/uploads/2012/files/gibopomemitufonunen.pdfIn PDF document text
- http://motocams.cz/ckfinder/userfiles/files/63287676395.pdfIn PDF document text
- http://bbhshipyard.com/userfiles/file/68269647144.pdfIn PDF document text
- https://hinodanang.com/uploads/image/files/sisaxubufa.pdfIn PDF document text
- http://leaguengn.com/userfiles/file///53956104913.pdfIn PDF document text
- http://bjjiffy.com/upload/51228178455.pdfIn PDF document text
- http://camel-republic.com/media/userfiles/files/vuzilonanebaweripuja.pdfIn PDF document text
- http://chia4kids.ru/ckfinder/userfiles/files/vadagemu.pdfIn PDF document text
- http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/1614550379f569---tajelemuzumosikofimibiba.pdfIn PDF document text
- http://greathorserider.com/ckfinder/userfiles/files/redekib.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_off0000c307.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC307 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000db19.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB19 | 16528 bytes |
SHA-256: c1976f6daf887d45e710883101fe505807db8b1f51cbf0155028cbc9d56f0a4b |
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font_02_sfnt_off000105a7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x105A7 | 10524 bytes |
SHA-256: 6aca4857dd0c47d17d63727e8e9939f8da11184d36c48892bce5abe0e9314dfe |
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