MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The presence of numerous external URIs, many hosted on compromised or disposable domains, indicates a link farm designed to redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9993
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://pixomot.ru/uplcv?utm_term=brinks+4+dial+combination+lock+reset
- http://php-lounge.de/userfiles/file/67566646650.pdf
- http://architettotoma.it/userfiles/files/vosisib.pdf
- http://gapoom.com/upload/fckeditor/file/71802061141.pdf
- https://ifacemount.com/wp-content/plugins/super-forms/uploads/php/files/kt7gvc4s0v66iml8lumja7s56o/73097217923.pdf
- https://aonetreks.com/uploads/file/3477890755.pdf
- https://ludifrance.fr/userfiles/file/14488465383.pdf
- http://mariamozharova.ru/uploads/files/16173705071.pdf
- https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/847655a88fa8d2b39c71f28d7439c7c8/89495899286.pdf
- https://agilitynd.com/wp-content/plugins/super-forms/uploads/php/files/80858972e6caa33d074535cce23a34bf/91927369872.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d3e39333718---34710929330.pdf
- https://stalbeckers.nl/userfiles/image/file/13899962185.pdf
- https://locktactyuma.com/ckfinder/userfiles/files/gomunijadez.pdf
- https://penzionradvanice.cz/res/file/52479195558.pdf
- https://aravlicraft.com/cmsCart//upload/file/tajadurume.pdf
- https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/91b05ce1030937d40ac51ddd96563a70/digafizasefugidasamibepet.pdf
- https://fastcomputer.vn/wp-content/plugins/super-forms/uploads/php/files/6a3253ff7cbfda414900d4217075ed08/makuvusamapevurid.pdf
- https://lacecinella.com/writable/public/userfiles/file/wutofimopigolosumufima.pdf
- https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c772745d61---gajulizasizajiw.pdf
- http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fa5ef061b9---fogola.pdf
- http://xn--vb0b83rba554gca.kr/page_data/file/20210609113515.pdf
- http://emusicmarket.com/upfile/board/files/36782282503.pdf
- http://asirakademi.com/resimler/files/1106845768.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_off0000e941.bin9d3402f5b87fef1c7df865925e649e1b0de2c4b681e0baebf38fc58cd9c81c7c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE941 | 10896 bytes |
font_01_sfnt_off00010286.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10286 | 16792 bytes |
font_02_sfnt_off00011a98.bin243a9868d60c90361f25bd3bdae4d28f1610c80a7cb95c2c5b455bcba0e68f18 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A98 | 18696 bytes |
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