MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier indicating a high probability of maliciousness. The heuristics identified the document as a link farm pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to redirect users to malicious sites. The embedded URLs, while numerous, do not provide a clear second-stage payload, but their nature as link farms strongly implies a phishing or malware distribution intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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 http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613c65bd58043---saduzu.pdf
- http://sithome.com/upfiles/file/20210905065004.pdf
- http://sluchatka-shop.cz/files/upload/files/jodobozomamelidopusananaz.pdf
- https://holycrosshealthcare.com/userfiles/files/48410947705.pdf
- http://business-plan-capalpha.fr/mbp/upload/images/images/upload/ckfinder/64644357629.pdf
- https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613acb8e3910c---82900376163.pdf
- http://abwmercury.com/uploads/files/45051472996.pdf
- http://wcsps.com.tw/ckfinder/userfiles/files/51957195266.pdf
- http://antitumor.org/filespath/files/20210903004915.pdf
- https://mashura.co/userfiles/files/32875404135.pdf
- http://semihkerpiccilervesupersound.com/upload/file/98825122436.pdf
- http://sportingfoundation.com/uploads/file/62552618846.pdf
- https://laplacedesstores.com/upload/file/40860001316.pdf
- http://wxeina.com/userfiles/files/89158646297.pdf
- http://nhatrangpalace.net/app/webroot/upload/files/navuf.pdf
- https://perfecthospital.net/ckfinder/userfiles/files/21298785757.pdf
- https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/0dvj6h8rmjjkdpnlp6f5vbliga/manobugufek.pdf
- http://leprofit.ee/cmsfile/contentfiles/xiraxile.pdf
- http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/29ab1eed980be6aba2e59dd888549ed1/lemejutotowoxo.pdf
- http://conditum.nl/userfiles/file/73002541282.pdf
- https://bilbox.es/wp-content/plugins/super-forms/uploads/php/files/24971114be67f0003defe249eae481c9/narimulisajumow.pdf
- http://zezoalza.com/ckupload/files/timolesujosivofupavure.pdf
- https://aljuboori.com/userfiles/files/28569150941.pdf
- http://chrisnoblelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/jimewesekunabidu.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=define+push+strategy
- 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_off0000e86c.bin7286baecac40891cecde520a961bd91a7af12f54c01ac6626ed24d96878c34d3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE86C | 17900 bytes |
font_01_sfnt_off000116d8.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x116D8 | 16792 bytes |
font_02_sfnt_off00012eef.binb5a1a2e7744f8d940a8138ee5498aa867537e1ee3d40f47daebdf94541d88228 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12EEF | 10688 bytes |
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