MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, with many embedded URLs pointing to compromised CMS uploads and disposable hosting. These links are likely intended to lure users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
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 http://mtcongnghiepxanh.com/upload/fckimagesfile/31456049371.pdf
- http://okmarin.ru/userfiles/file/25401979188.pdf
- http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608df842c09a8---mepixefujizuzewoze.pdf
- http://wrtour.com/FileData/ckfinder/files/20210602_DED452CA4B26178A.pdf
- https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/160a8b87495f46---35451372058.pdf
- http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8d5d9a97f1---rovepakefavisu.pdf
- https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9b8e2a16df---bunitopufesepugixel.pdf
- https://manuscripthandler.com/userfiles/file/54157397830.pdf
- http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/vqi1rdh2e4cm9vpsh66m60n7vk/fodukokenabutemesa.pdf
- https://ceccargiurgiu.ro/userfiles/file/50441424778.pdf
- https://him-home.ru/wp-content/plugins/super-forms/uploads/php/files/802265bb7cdb37cc46eb27f78a693c3e/tosekupavevasebezokotilo.pdf
- https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/707a9a323c11cf88b556c00b2882e217/57393648677.pdf
- https://kebecelectrique.com/upload/editor/file/42001882171.pdf
- http://mindentudor.hu/userfiles/file/58877625106.pdf
- https://mobilieroccasion.fr/uploads/file/kojuxiv.pdf
- https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/83e90a6dee37570fedba367c647b3e0d/xemopivudabewivok.pdf
- https://mabuksusu2.com/contents/files/kafoduvavofebenimuvedifaw.pdf
- http://bulk-supplies.com/userfiles/file/32799866776.pdf
- http://kartywspomnien.pl/uploads/assets/file/99972547562.pdf
- https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/6202cf3d7dd28106aff996168d001b42/konixirefuz.pdf
- http://patanamachine.com/imgUpload/files/44203700893.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=evanescence+my+immortal+piano+sheet+music+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_off0000bf5f.bin2b89f220f330f8aa9b8644d47eb0488af585bdbd357a2f9e185fad86405b4961 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBF5F | 17500 bytes |
font_01_sfnt_off0000ebb0.bin2e1f4c9d5c79067ac69361e2d445660377c10c2e23c3e0b210fcba0210b7f6cf |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEBB0 | 11148 bytes |
font_02_sfnt_off00010590.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10590 | 16792 bytes |
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