MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file contains numerous links, many of which point to compromised WordPress sites, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URLs are indicative of a phishing or redirection attack, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/5b3e9e85dbd49ba8528522b6e5414164/nupesadomalunanufomu.pdf In PDF document text
- http://tentauto23.ru/ckfinder/userfiles/files/24513638627.pdfIn PDF document text
- https://insolite.lu/img/userfiles/files/jebafuvesaguvolugataneb.pdfIn PDF document text
- https://learningsolution.ca/userfiles/files/78302014968.pdfIn PDF document text
- https://hanurichurch.org/ckfinder/userfiles/files/monorafavopelo.pdfIn PDF document text
- http://lynxauto.ru/userfiles/file/63222617450.pdfIn PDF document text
- http://lotusromeo.fr/app/webroot/files/userfiles/files/98003561497.pdfIn PDF document text
- http://tuvanthanhlapcongty.biz/upload/ck/files/wuxonuzamefofetarijodu.pdfIn PDF document text
- http://mixmarketing.vn/upload/fck/file/kawupojazuzaj.pdfIn PDF document text
- https://jdrum-music.com/uploads/ckfiles/files/59714691837.pdfIn PDF document text
- http://xn--b1akwe.xn--p1ai/userfiles/file/fodutebutirukeka.pdfIn PDF document text
- http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16155cf1fec627---wanelodawojelufizirujasaz.pdfIn PDF document text
- https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/8ohpglh8v4fh022i08lvnerfri/78977284916.pdfIn PDF document text
- http://lightofislamonair.org/uploads/files/puseburamejowuvofa.pdfIn PDF document text
- http://kolesnikov.pro/ckfinder/userfiles/files/31902458865.pdfIn PDF document text
- https://west-holding.com/userfiles/file/41019859112.pdfIn PDF document text
- https://ht-cooling-j3t.com/contents/files/27653295914.pdfIn PDF document text
- http://banghetretruc.com/media/ftp/file/75733373446.pdfIn PDF document text
- http://daydreamspin.com/userfiles/file/56392934841.pdfIn PDF document text
- http://lnv-cnc.gr/userfiles/file/razabovif.pdfIn PDF document text
- http://kibunajcc.com/ckfinder/userfiles/files/wenewim.pdfIn PDF document text
- http://lexxyin.net/files/fckeditor/file/livebomenowofuxe.pdfIn PDF document text
- http://rockycheng.com/ckfinder/userfiles/files/nokifomedilujifina.pdfIn PDF document text
- https://xehowo24h.com/images/ckeditor/files/sokajidewalox.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=national+center+for+biotechnology+informationPDF 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_off0000bfda.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBFDA | 10848 bytes |
SHA-256: 02bada877497168e2032ee49b04d815b59fefa4068ab17a3e3e1682c30c5036a |
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font_01_sfnt_off0000d8ba.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD8BA | 16404 bytes |
SHA-256: 15817043ef82feacb8297a54db8311cd50cd1547ebf1bf5643ec17ea0835fcc4 |
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font_02_sfnt_off00010279.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10279 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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