MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to multiple compromised WordPress upload storage locations. These links likely serve as a distribution point for further malicious content, such as a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9961
Heuristics 7
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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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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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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://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1609bb146227e7---34868140604.pdf
- http://boeschfamilytravels.com/clients/43210/File/35486099661.pdf
- http://ahcxdq.com/uploads/file/12103321625.pdf
- http://ferrogep99.hu/static/media/file/11712062482.pdf
- http://indigobaby.eu/upload/files/fagonajigiv.pdf
- http://www.darvidproperty.com/news/file/ropaludukokepufepal.pdf
- https://sckstone.com/wp-content/plugins/super-forms/uploads/php/files/275a7b5b69007076d8f609d24eb2696f/18983207337.pdf
- https://cmoretv.com/userfiles/67477060237.pdf
- https://abe-rdc.com/userfiles/file/5945471759.pdf
- http://www.predia.cz/userfiles/file/mogitufise.pdf
- http://cuacongtrinh.vn/upload/files/1231553877.pdf
- http://mispuntossaga.com/campannas/file/wisosogifidebevi.pdf
- https://thejasmineway.net/wp-content/plugins/super-forms/uploads/php/files/l0fl8ajvi13fl2l66g9kd4ffot/13252403054.pdf
- http://nickels.design/ckfinder/userfiles/files/14841304032.pdf
- http://nomaquito-travel.com/editor-images/tufakoma.pdf
- https://ankaratemizlikcim.com/depo/sayfaresim/file/zogirugasitep.pdf
- http://anhbanglaw.com/userfiles/file/25633109057.pdf
- https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5a66c470b8.pdf
- http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b2f53c53140---49670617804.pdf
- http://brkvinc.com/userfiles/file/21001182882.pdf
- http://www.apsetedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075a73a1e8b4---95749314296.pdf
- https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/e42ba59v7h25m3ibg90kpj84r8/3410596531.pdf
- http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16078dfca0d896---79007273844.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=ihm+research+project+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_off00018c62.bin284d9adeb680847fc68ea0085699536394a5a8b3b47f7fa846d491178c9c0962 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x18C62 | 18300 bytes |
font_01_sfnt_off0001bb56.bin8020d71545abe81f993a664bd19dc20ed9554206b351a36db50df0e6073b048e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1BB56 | 10724 bytes |
font_02_sfnt_off0001d3fc.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1D3FC | 16792 bytes |
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