MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics and ClamAV as malicious, specifically as a phishing or trojan delivery mechanism. It contains numerous external links, many pointing to compromised WordPress sites, suggesting it's part of a link farm designed to redirect users to malicious content. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the PDF structure and URL patterns are indicative of a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
Heuristics 6
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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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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://laborke.ru/uplcv?utm_term=hamlet+act+3+quiz+multiple+choice+pdf
- http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b80694519ca---xekosib.pdf
- https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/125535c828fff0a6b7ea458ec6043f70/80606444346.pdf
- https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160ac7a9a178fb---temumefode.pdf
- https://alice-immo.com/userfiles/file/38489078536.pdf
- http://otczenacts.com/media/files/20359615859.pdf
- http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160be641a95286---magulezipoxafenelu.pdf
- https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/vkpso1aqbjmgn1ffmeefsvgmo0/3704602031.pdf
- http://htlexpress.com/ckfinder/userfiles/files/gizewetipek.pdf
- https://tomorrowhubs.com/upload/users/files/7819209599.pdf
- https://olterus.net/contents//files/ratawagovakoxu.pdf
- http://epoxidice.ro/mm/file/gabew.pdf
- https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/c8fa2180a009e993516ac4a9b5f8c468/32367818614.pdf
- http://stroisvias.ru/userfiles/file/sulubusenuvotena.pdf
- http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a8679738748---20578312535.pdf
- https://andhimazhai.com/images/files/dimuvezamitanijulore.pdf
- http://eastindiaspray.com/suvra/eastindia_spray/files/65563247129.pdf
- http://le-lemniscus-incandescent.fr/ckeditor/upload/files/76965615818.pdf
- https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/160b82c336c975---xufuwiwelilitola.pdf
- https://jxloanchien.com/style/postimage/file/kuwenasasifaja.pdf
- http://say-international.eu/userfiles/file/32097645780.pdf
- https://abe-rdc.com/userfiles/file/55744700135.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_off0000f90b.bin3fc8d0a5404a8aa92649fa9590081dd4b55919950d022c143cf493c8e59c739f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF90B | 10980 bytes |
font_01_sfnt_off00011255.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11255 | 16792 bytes |
font_02_sfnt_off00012a67.bin6d18a1285a5332ac0cc29271da898ba2807994fe6a96b45a7fa73e859a05662e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12A67 | 18528 bytes |
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