MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF document contains numerous embedded URLs that point to other PDF files hosted on various domains, indicating a link farm designed to distribute malicious content. Heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' strongly suggest this malicious intent. The ML classifier and ClamAV detection further confirm the malicious nature of the file, likely serving as a lure for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
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://crewmak.ru/uplcv?utm_term=wordup+vocabulary+pro+mod+apk PDF link annotation
- http://nhatrangpalace.net/app/webroot/upload/files/lemofozefaja.pdfIn PDF document text
- http://mixline.ru/img/lib/file/88833286311.pdfIn PDF document text
- http://jenan.com/ckfinder/userfiles/files/numuvoga.pdfIn PDF document text
- http://salon-urody-bellis.pl/images/file/gilujozivavolezotosutiva.pdfIn PDF document text
- http://zhouzhuanx.com/v15/Upload/file/2021926613214913.pdfIn PDF document text
- http://chiangmaicharmingtravel.com/ckfinder/userfiles/files/794106053.pdfIn PDF document text
- https://dom4m.de/userfiles/files/wowaronama.pdfIn PDF document text
- http://metamorfozyayincilik.com/userfiles/file/98762184916.pdfIn PDF document text
- https://detectiveoffice.net/userfiles/file/vixosemo.pdfIn PDF document text
- http://www.ctnphrae.com/ckfinder/userfiles/files/3572759742.pdfIn PDF document text
- https://luiginoiobbi.com/userfiles/file/36341212709.pdfIn PDF document text
- https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/5o1uthc7tedrj853krjbcetlin/rivuvamuzozuzijarabu.pdfIn PDF document text
- https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16144915ac39e7---21474878908.pdfIn PDF document text
- https://gemwares.com/userfiles/file/furiwona.pdfIn PDF document text
- http://askaudit.ru/price/88024961401.pdfIn PDF document text
- http://salt17.com/userfiles/files/8799333077.pdfIn PDF document text
- http://theexplorerthai.com/userfiles/files/13668820267.pdfIn PDF document text
- http://www.rajpuc.pl/pics/file/busotojonadopirajud.pdfIn PDF document text
- https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/161340f07b89eb---94224106231.pdfIn PDF document text
- https://tnmkor.com/FileData/ckfinder/files/20210904_A7A60BFC04258124.pdfIn PDF document text
- http://sinsg.com/files/fckeditor/file/tulalobuvotoge.pdfIn PDF document text
- http://flyingkirin.com/uploadfiles/file/031959242368.pdfIn PDF document text
- http://ombs.ru/uploads/files/xuzusawigolisarofazuminu.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_off0000afff.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAFFF | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000c811.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC811 | 14864 bytes |
SHA-256: e469b03faf1e7a97f988dbe590cba679e2e2726c200a41fb8fe5e8336dcb962e |
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font_02_sfnt_off0000ed26.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED26 | 10588 bytes |
SHA-256: c64a260a75c7455d30bc5852280c600eebcbe39ed5aa293144d1012cee74cca8 |
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