MALICIOUS
104
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains an embedded JavaScript stream and a large number of external URIs, many of which point to compromised WordPress sites. These links appear to form a link farm designed to redirect users to download files, likely as part of a phishing or malware distribution scheme. The ML classifier strongly indicates maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
Heuristics 6
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1612feb726fdd3---23366510205.pdf In PDF document text
- http://escritacontabilidade.net/fotos/news/file/99478921285.pdfIn PDF document text
- http://szermgrt.hu/uploads/ckfinder/userfiles/files/wunimojetikovasol.pdfIn PDF document text
- http://xn--42-jlclgg6a3e.xn--p1ai/userfiles/file/75545925893.pdfIn PDF document text
- http://barahi.com/assets/userfiles/files/basekabetusiwesinolewamuk.pdfIn PDF document text
- http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d507659e6e---28104834776.pdfIn PDF document text
- https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135b55e55f0d---14511359534.pdfIn PDF document text
- http://bukvoznaika.ru/ckfinder/userfiles/files/tetagemajavovamasumibu.pdfIn PDF document text
- http://nepalbestcargo.com/userfiles/file/xarukumovas.pdfIn PDF document text
- http://byecook.com/ckupload/files/zopopobazijexawe.pdfIn PDF document text
- https://sahyadrisevasanstha.in/userfiles/file/79842577453.pdfIn PDF document text
- https://hitourkorea.com/FileData/ckfinder/files/20210912_4860668BB96FB2CF.pdfIn PDF document text
- http://jtylek.pl/Upload/file/88957379746.pdfIn PDF document text
- http://nato-denkmal.de/uploads/file/tilijowuwifatanasuxi.pdfIn PDF document text
- https://fedico.ca/upload/editor/file/dekitugu.pdfIn PDF document text
- https://seikai.jp/free_images/files/32825926187.pdfIn PDF document text
- http://cofetariafraguta.ro/UserFiles/file/23504233428.pdfIn PDF document text
- https://ferest.ro/imagini_ws/14186764073.pdfIn PDF document text
- http://cobmedia.hu/include/27816017960.pdfIn PDF document text
- https://f2h63c2.ip4secure.net/upload/files/funetuwudok.pdfIn PDF document text
- https://vr-spagna-20.effievirtual.com/galeria/files/wesutupuzafexedobukakine.pdfIn PDF document text
- https://fidelishospice.com/ckfinder/userfiles/files/mijilifuduvo.pdfIn PDF document text
- http://firewaterdamagedfw.com/test/fckeditor/uploadfiles/file/debizanerorebibawiku.pdfIn PDF document text
- http://tsutae-f.com/js/upload/files/64914508500.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=minecraft+apk+2009PDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000cff0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCFF0 | 21772 bytes |
SHA-256: 66d2fa8bc5dd6326bac07e35d73b3faae72ae6f55b23aea2e5061abde33e7da4 |
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font_01_sfnt_off000109ea.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x109EA | 10636 bytes |
SHA-256: 16dac373095de6c15ae6ec97a055f779fefc9cc06dfa0dc740336639ef99ac95 |
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font_02_sfnt_off00012274.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12274 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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