MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to external websites, many of which are hosted on compromised WordPress installations or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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=pc+kinemaster+free+download
- https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1613c65836679c---1659240530.pdf
- http://tasfor.com/files/galeria/files/paxupukid.pdf
- http://keifo.ru/ckfinder/userfiles/files/pokexu.pdf
- https://delcinfo.ru/img/files/files/fidosisu.pdf
- http://www.adarshvidhyasankul.org/userfilesfile/40063436304.pdf
- https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/1takrd07pqknti75rkhlf5110g/15650823847.pdf
- http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613db75e25aca---ziletixuwuzete.pdf
- http://okeefesreef.com/ckfinder/userfiles/files/10923745079.pdf
- http://architectureanddesign.it/userfiles/files/mekolivol.pdf
- http://unternehmensberatung-hegenbarth.de/userfiles/file/84010099733.pdf
- http://mg001.cn/upload_fck/file/2021-9-7/20210907020438629752.pdf
- http://kayapalinakliyat.com/file/rupubivojuwebixu.pdf
- https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/4tqqhsv96ukfl0kbn8i25sreak/32891161709.pdf
- http://www.mezmat.ru/ckfinder/userfiles/files/26107969427.pdf
- http://kingtonkatsu.com/uploads/files/88378878144.pdf
- https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/f4df012d0d9530019d2fe5404c41851a/65609792572.pdf
- http://deleeuwputten.nl/site/data/ws/files/28168611663.pdf
- https://vayamcs.com/content_files/files/vexapufajuw.pdf
- https://stijsr.com/userfiles/file/wejobebiwexekugijo.pdf
- http://xszhuhai.com/uploadfiles/files/jetirowodegugozam.pdf
- https://postelezmasivu-ostrava.cz/ckfinder/userfiles/files/62549662260.pdf
- http://nousgarage.com/userfiles/file/24913947386.pdf
- https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/n0fsr55mg99i2hrabksp3kd56l/22619417405.pdf
- http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/28ab6edaf79b448bb97e0cdfa1deae78/gugaripe.pdf
- http://tokyoracing.hu/userfiles/file/dujuzowumuk.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e1d9.bin8b03fbf76ec817a2777571dfa4c57682ecc604a49535c5e263848d1b5e33216a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE1D9 | 18308 bytes |
font_01_sfnt_off00011148.bina2f4ddfb0a7e15793694278aacc07c693e355ed3203732513b8515e23c7f10fc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11148 | 10816 bytes |
font_02_sfnt_off00012a4e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12A4E | 16792 bytes |
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