MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many hosted on compromised WordPress sites, suggesting a link farm or phishing lure. The presence of PDF-specific heuristics like 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this, indicating the document is designed to redirect users to potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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://archism.ru/uplcv?utm_term=operating+systems+concepts+10th+edition+solutions
- http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160801b17a7a72---keforew.pdf
- https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7f32a9bbf3---27012320381.pdf
- http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/afqnualum279mabqrs2fvv66v5/zuzebogetudizevaletilofof.pdf
- http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160804d199a450---22120294775.pdf
- http://psychoterapia-przemysl.net/img/userfiles/file/jatud.pdf
- http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/a054369f7ee8a636bcdc4d3b08ddaf25/zalireminulexep.pdf
- http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160c28d6eadfc8---63044014451.pdf
- https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/08b36fcb1387214b5bc2f6733ec56bef/wozuzofovubugu.pdf
- https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4e5dcda6e0---pizewakiforamax.pdf
- http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160a41e132d7eb---41812720048.pdf
- https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/b175e0b4009508c73d0de9044183660b/lomepivamirijew.pdf
- http://mppscstudy.com/admin/usercontent/file/durop.pdf
- https://tlproduct.com/userfiles/file/tazudofotepimunekixusuzab.pdf
- http://bioident.pl/photos_fck/file/junuvesubimivixezakej.pdf
- https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/6e5c454c8e4a32f96db218a2e1d210b3/57793142264.pdf
- http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/vd86ck0thft8pr8nuv9ln1ub7u/xizetojedirifavejififol.pdf
- https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/d24a45cc012e46aef704ea74287c558b/69469836934.pdf
- https://pinotcar.com/wp-content/plugins/super-forms/uploads/php/files/078a8575e8ccf0344c25d59979635b36/96620049532.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- 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://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ecea.bin88bfbeaa81331cf120e9350fab8e6f33fcb33ff7bfa38d7a81afee83dafd8914 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xECEA | 5808 bytes |
font_01_sfnt_off0001008d.binf94599c47d043bbea03c14fb79874931bc32702a7dd2e997a1253ce822d1c4eb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1008D | 11084 bytes |
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