MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs that point to other PDF files hosted on various domains, indicating a link farm designed to distribute malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports the interpretation of this file as a distribution mechanism.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
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=voicemail+icon+on+android PDF link annotation
- http://mictrogiang.com/userfiles/files/vunuwibomepuj.pdfIn PDF document text
- http://irollee.com/userfiles/file/88679280703.pdfIn PDF document text
- https://rdsdealers.com/ckfinder/userfiles/files/43109604262.pdfIn PDF document text
- https://unitedfightalliance.jordanadams.com/ckfinder/userfiles/files/56619218009.pdfIn PDF document text
- http://seattleteriyaki3.com/uploads/files/72494191071.pdfIn PDF document text
- http://khodahoanglang.com/admin/webroot/upload/image/files/18790647778.pdfIn PDF document text
- http://trunghungplastic.com/luutru/files/275574539.pdfIn PDF document text
- http://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/16136ff488d7f0---kibunibuluwekiwob.pdfIn PDF document text
- https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/77f63a549a0620e206af5a00ffe12fab/zutufokalobibuda.pdfIn PDF document text
- http://trustarshida.co/cache/fck_files/file/gojusixodegivu.pdfIn PDF document text
- http://sicilalluminio.it/userfiles/files/gajejezorejogax.pdfIn PDF document text
- http://perchegouet.com/ckfinder/userfiles/files/ropetonosebufosuk.pdfIn PDF document text
- https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ca0dae526d---91391536667.pdfIn PDF document text
- http://evrofurnitura.by/elax-furnitura.ru/uploads/files/2596926828.pdfIn PDF document text
- http://donateagift.eu/userfiles/file/5598808849.pdfIn PDF document text
- https://sammycar.ch/sammy/sites/default/sammyfiles/newsletterfile/23880590034.pdfIn PDF document text
- http://www.almansori-ye.com/almansorifiles/files/tuzedural.pdfIn PDF document text
- http://bridgestone-ice-cruiser-7000.ru/ckfinder/userfiles/files/3707818017.pdfIn PDF document text
- https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/16139b8a60ffd8---setetezulogivatigol.pdfIn PDF document text
- https://rpaxis.net/userfiles/file/witega.pdfIn PDF document text
- http://gerocuki.hu/user/file/zegedotivupapavebirasejon.pdfIn PDF document text
- http://www.keizerco.nl/userFiles/file/pusifumikus.pdfIn PDF document text
- http://studiomarcheluzzo.it/userfiles/files/52376973823.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_off0000f2ec.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF2EC | 19384 bytes |
SHA-256: b374d2e6f928b2b5299d3fe6bdabe28e524bdef88c17d7055b52a273f1889b02 |
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font_01_sfnt_off0001255b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1255B | 10232 bytes |
SHA-256: 3d4923870a479dc194414f926ae995251625f0a07139b0d6d590e69adde7c54c |
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font_02_sfnt_off00013c3a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13C3A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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