MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics as containing a link farm pointing to compromised WordPress uploads, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection further confirm its malicious nature. The embedded URLs likely serve as lures to download a second-stage payload, which is a common tactic for phishing campaigns.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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 http://asu.com.vn/wp-content/plugins/super-forms/uploads/php/files/raec08fnu4hhl010sh5r39h4mm/gizutopijaxibukis.pdf
- http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c10c8cf2f40---lawokekeguluvesuxuxevazi.pdf
- http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/v93m7alq04d3e6rpgkg4ii1a02/95938019010.pdf
- http://auxerretv.com/content/public/file/folusaroso.pdf
- http://icwest78.com/clients/67591/File/17423241527.pdf
- http://shipsupply.ru/userfiles/files/91320893655.pdf
- http://accronline.com/userfiles/file/84475579469.pdf
- http://0-50.ru/userfiles/file/84232931159.pdf
- https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608645f90941e---4331549326.pdf
- https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/160c5647870594---91087791280.pdf
- https://www.qlsny.com/wp-content/plugins/super-forms/uploads/php/files/a85c07e685f73a2d016ed30b930e6687/38654561587.pdf
- https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160759e2121822---22856937052.pdf
- http://amdind.com/userfiles/file/58479627024.pdf
- https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae44d0be5b9---vabitapideragezovidema.pdf
- https://haltia.mx/sii/ckfinder/userfiles/files/95528127914.pdf
- http://pferdefreunde-brueckenhof.de/sites/default/files/userfiles/file/vafekafava.pdf
- https://gdr.co.il/wp-content/plugins/super-forms/uploads/php/files/6ce71c5742c1e1655e1a9491633305af/lategevebud.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=free+gay+text+line
- 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_off00010e20.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E20 | 16792 bytes |
font_01_sfnt_off00012632.bin2b9515c0d0bb55cd6807bf1cf67fec261a965682fd9e27c0e5534e2a661f0862 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12632 | 18156 bytes |
font_02_sfnt_off00015652.binfd361f1c82b95fb5194e0360922d65e74b78d39f67968a81f36aac21aa35d77b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15652 | 10188 bytes |
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