MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains a link farm pointing to multiple URLs hosted on compromised WordPress sites, suggesting a phishing or malware distribution scheme. The presence of external URIs and link farms on potentially compromised infrastructure are key indicators of this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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://centrobrands.com/wp-content/plugins/super-forms/uploads/php/files/8e07cf76ce42c746e2db24998ddce22a/noxukewijefazu.pdf
- https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607f6fe0b221a---xituwu.pdf
- http://1970fchs50thclassreunion.com/clients/1/19/19770213778af891f1b13fa25f964f50/File/50860514650.pdf
- https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16072d09082629---tifivejiniwofikavoji.pdf
- https://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/3ca9i47n2m3vltkg4p8fg036cq/fadojipumodojewidinon.pdf
- https://fastcomputer.vn/wp-content/plugins/super-forms/uploads/php/files/7a5f9760949cd80c04a08fa449a2b645/basibezonademepov.pdf
- http://asokmontridental.com/userfiles/file/83071283189.pdf
- http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/k9p5nlpdegc451soodvmirhck5/53554348379.pdf
- https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/rdf01biin6mug19u7j6ihiqei6/pidegasusi.pdf
- http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160c718d994f96---befivunixazebe.pdf
- http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c7b286d93e---60004773132.pdf
- http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9e93d4b92f---39215059838.pdf
- http://archi1919.com/smlclub-files/file/nisata.pdf
- http://ahkjt.com/upfile/file/rofatuwabedujuxes.pdf
- http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e2371c832d---siwuzatajuvimifo.pdf
- https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c25ca53918---kebibabepukedi.pdf
- https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/2qt34d5qjlf799gb7mie07e5en/84605431937.pdf
- https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/qanklv2vvum83gr8tbeauolo64/34667505303.pdf
- https://mannerfeltdesignteam.se/ckfinder/userfiles/files/joruxubetotevuxeninojog.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=skam+season+1+english
- 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
- http://scripts.sil.org/OFL
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
stream_004_off00010dca.bina9400914d70c8dc18b03781f67139dae80560eca97a0ec6074ee2ca9ea625f91 |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x10DCA | 21044 bytes |
font_00_sfnt_off0000d087.bin20f60447d41684c0ef151ae9217a169e0bd49dc76e71c727ba7ac1b970f68489 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD087 | 5224 bytes |
font_01_sfnt_off0000e231.bin99c055eb2a632bfead53d4eb1ff27ff625a0af5cda6952824d06e6d04e495058 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE231 | 13500 bytes |
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