MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains multiple heuristics indicating it is a link farm designed to redirect users to malicious sites, with several URLs pointing to compromised WordPress installations. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for malware distribution or phishing. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
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 to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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://pistant.ru/uplcv?utm_term=will+skinny+guys+gain+weight
- http://alexhoffordphotography.com/temp/files/file/73591817120.pdf
- http://securitydirect.it/wp-content/plugins/super-forms/uploads/php/files/8c4b18846087bb5641ace204a79b8284/sanodizotekunolegirekono.pdf
- http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607c7e4c8e4de---pixoge.pdf
- http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607275d380309---bukuxijanat.pdf
- http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/1608f7c8d430cb---fawevivodapaparikek.pdf
- https://functionalmovement.gr/wp-content/plugins/super-forms/uploads/php/files/e9437d8a526005b210a5666f8daacb70/zavugixomezuti.pdf
- http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1609f9eb6b0beb---vidubav.pdf
- http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/da76f32c093f82f6ac1979579a45c5b3/zokofobikeloxulukiku.pdf
- https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/16082c39426484---xurojanafogok.pdf
- https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1609ede42bc783---vutakunugi.pdf
- http://anhuizpyy.com/upload_fck/file/2021-4-30/20210430201101382520.pdf
- https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/12cl8if0tsjqlqed4h2hipic6a/63328463610.pdf
- https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/274dfe03d2d4e6aa5c73c9a3e50f0271/52982434731.pdf
- https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/b9bfcec2a2e6393a377541f660ea36e0/kitilodomesopexesixes.pdf
- http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092e4933746a---31195854737.pdf
- https://sellerflows.com/wp-content/plugins/super-forms/uploads/php/files/bc5278a1e0bf208b4973cce3e86eee5c/kunuvepatevum.pdf
- https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/81lfoli7seb16fbb4hfj12ld8c/70140777326.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f258.bincb8df4d4ba477d04c9da27d07d11ebc3ff740deedd70317bc7bf41932bd9aa9b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF258 | 5124 bytes |
font_01_sfnt_off000103eb.binb610d87b82e0900d69be99fa33d3bdaa8f2be15c9846e946f7f5d33f9a127c36 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x103EB | 10992 bytes |
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