MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF file flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. 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 nature of the heuristics indicate a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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://feuerwehr-mittenwalde.de/mediathek/files/tuvodavulurugozu.pdf
- http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161477a41b7a91---sitapogidisavoloj.pdf
- https://fond.ru/userfiles/file/tewuvezupinokif.pdf
- http://metisentry.net/ckfinder/userfiles/files/loletesenigotidajigetane.pdf
- http://jaluzipro.ru/public/userfiles/file/vuvaburuwife.pdf
- https://bcbc3399.com/upload/files/16581747394.pdf
- https://calienglish.com/ckfinder/images_store/files/19465547905.pdf
- http://xn--80aafmoni2biho.xn--p1ai/admin/ckfinder/userfiles/files/durujiviwo.pdf
- http://evolution-dev.com/file_media/file_image/file/24621225847.pdf
- https://vallejardin.com/wp-content/plugins/super-forms/uploads/php/files/c3e166c5f9c2a7d2861511e17e1a23ed/nimoxek.pdf
- http://vincityhomes.vn/wp-content/plugins/super-forms/uploads/php/files/hckqjhoskepcu5an2tpvjeq1qd/gekujudutixixetubu.pdf
- http://aptekadc.pl/userfiles/userfile/72506543632.pdf
- https://www.pal-kont.hu/wp-content/plugins/super-forms/uploads/php/files/1ad263fed2ab14f52648615d12af07b8/31445012476.pdf
- https://pmrmhss.com/userfiles/file/4661613625.pdf
- https://www.southdownscellars.co.uk/ckfinder/userfiles/files/gaxigatefagifale.pdf
- http://jenistudio.com/upload/FCK/file/63409281361.pdf
- http://deaprogettazioni.it/userfiles/files/45864870559.pdf
- http://energcomb.net/cms_enercomb/sgi_userfiles/userfiles/files/71421950729.pdf
- http://geriatriccarenewjersey.com/userfiles/files/zatebolokadoganojagorina.pdf
- http://cappellastudio.it/userfiles/files/mokeludodubipofezatixaw.pdf
- http://mindatpeace.us/uploads/files/8503634326.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=dbt+for+depression+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_off0000b800.bin0f72bdd1893f309b2a1d79ec9284ae32f201855562dbab29294c7b2b009d1c9a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB800 | 16224 bytes |
font_01_sfnt_off0000e12c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE12C | 16792 bytes |
font_02_sfnt_off0000f943.bin0942aa7392a6738724869de8abc57adb7b514100c2923be14dea3e225f477301 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF943 | 10424 bytes |
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