MALICIOUS
172
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains embedded JavaScript and numerous links pointing to various domains, many of which appear to be disposable or compromised. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' strongly suggest a link farm designed to distribute malicious files. The embedded JavaScript likely facilitates the download or execution of a secondary payload, as indicated by the 'PDF_JS' heuristic.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
Heuristics 8
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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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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://crocepadrekolbe.it/userfiles/files/tukukene.pdf
- https://projektovanje.info/userfiles/file/nemikufojifotapijilo.pdf
- http://dogable.de/userfiles/file/82216795945.pdf
- https://pakianco.ir/data/image/uploads/news/files/todepi.pdf
- http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/4oeilnnincnpk5ks9aihihuedc/kojavajazavakixota.pdf
- https://terminarz.online/kosmetyczka/krakow/files/58282748719.pdf
- http://bladensburg.abwingsmd.com/uploads/files/1243100971.pdf
- http://studiotecnicomartani.eu/userfiles/files/roraginemosanebavopad.pdf
- http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fdca9934f6---lubowok.pdf
- https://chsins.tw/uploads/files/202109031949489953.pdf
- http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/lbla7sfvutdlkd7rvehoimr8t7/diwukarikadokuzadavagobol.pdf
- https://gmnavarra.es/ckeditor/files/29801559046.pdf
- https://x-leather.com/radsportfiles/file/zawefokikaj.pdf
- http://twfindia.in/userfiles/files/xemorazatasunadiniloti.pdf
- http://mibenjamin.com/userfiles/file/foburosupumodeza.pdf
- https://walterchiropracticclinic.com/home/walter/public_html/ckfinder/userfiles/files/tukofefiluzuz.pdf
- https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/8k0933edarjoemc8jgcdksd51u/wafimuvofevukesiwadux.pdf
- http://kahasat.cz/data/file/falonewavotunazesoxe.pdf
- http://creatinglifeoptions.com/userfiles/files/joridedepatup.pdf
- https://blagoustroystvo24.ru/ckfinder/userfiles/files/punefudenigoruvijijujuzu.pdf
- http://carneiro-sa.pnh.pt/js/ckfinder/userfiles/files/61337678081.pdf
- http://eros-arena-reutlingen.de/eros/userfiles/file/79384575640.pdf
- http://www.gamylai.vn/uploads/files/43588200389.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=animal+farm+online+text
- 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_off0000c668.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC668 | 16792 bytes |
font_01_sfnt_off0000de7a.bin1fef211ffb6fd06069f7079f56526827a90203bdadc6bc9cf1c84ab984bd6d80 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE7A | 17004 bytes |
font_02_sfnt_off00010a72.binf8be72a2e1aaaa22d8cbdeaafe8628bbf147d5d56e3fdfdd9cdd5f700d83bbc0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10A72 | 10292 bytes |
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