MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links pointing to compromised WordPress sites and other disposable hosting, suggesting it functions as a link farm to distribute phishing content or malware. The presence of embedded URLs and the nature of the link farm indicate a spearphishing attachment vector, likely leading to further compromise.
Machine Learning
- Nyx PDF Classifier malicious score 0.9936
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://oniceh.ru/uplcv?utm_term=how+to+do+a+prison+tattoo
- http://vibrosystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160805354c85eb---75126873051.pdf
- http://bachova-terapia.sk/images/file/dokevab.pdf
- http://www.retorika-zidar.si/ckfinder/ckeditor_uploaded_files/files/46202138625.pdf
- http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093acc6d316c---temidozuwikew.pdf
- http://pferdefreunde-brueckenhof.de/sites/default/files/userfiles/file/dusanume.pdf
- http://timebymtm.com/upload/files/5206711132.pdf
- https://www.golaw.net/wp-content/plugins/formcraft/file-upload/server/content/files/160ae86c370f08---velawinevaz.pdf
- https://catbasailing.com/upload/fck/file/kagozuxikupusekurawob.pdf
- http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/388cc850e39955d54d8be87449e31396/zimasugolenukomejojobuna.pdf
- http://npas.ru/pic/file/zesetami.pdf
- http://aceonlinementors.com/userfiles/file/74144710790.pdf
- https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/9a4124bc5b9c7b398f6658f2367d4bc4/60056826720.pdf
- https://www.napariverinn.com/wp-content/plugins/super-forms/uploads/php/files/e951dfe6276db1be93efff7ba59dd263/zodosawopudadixot.pdf
- http://nomaquito-travel.com/editor-images/lupuza.pdf
- http://kyanite.tv/userfiles/file/81297004617.pdf
- https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a13bdee6c5d---2618092757.pdf
- https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/46306780fd8a2c765f25797c0c56f6a0/jovegabadipukaxegulus.pdf
- https://purmoradiatoriai.lt/images/files/luxamemal.pdf
- https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/e898c8d293b8ef7a4d1be3a6ee84127f/70077725028.pdf
- http://hrjok.com/uploadfile/file/8450280114.pdf
- https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/160876e5bad804---nusekinujewikiku.pdf
- http://reutlinger.pl/userfiles/file/vixokorokujesikekoriroxi.pdf
- https://www.zaantraining.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608b177102f94---56396552437.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_off00011edb.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11EDB | 16792 bytes |
font_01_sfnt_off000136ed.bin537365e9488f84c2b81fce2ce373a3e68e038d20eb5e3a0a24f8c13913d1c03b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x136ED | 19608 bytes |
font_02_sfnt_off0001690e.bincaa7c37ab32e40533335e3beff9ca262a14169bcefde726ad72df580b95c6de3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1690E | 10284 bytes |
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