MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF document identified as malicious by ClamAV and ML classifiers. It contains numerous embedded URLs that form a link farm, pointing to various compromised WordPress sites and other domains. These links likely serve to redirect the user to a malicious destination, potentially for phishing or to download further malware. The PDF structure and the nature of the URLs suggest an attempt to obscure the final malicious destination.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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 https://wastran.ru/uplcv?utm_term=analytical+interview+questions+answers
- http://dainichiji.com/upload_ckr/files/xukawera.pdf
- http://accessiblevehicleservices.com/userfiles/file/jofekavemafopogixi.pdf
- https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/160ce31a6e5f4c---22424508892.pdf
- http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a138945bcc8---pibedevovapazigagonokad.pdf
- https://www.zaantraining.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c11e886cc8d---27257800820.pdf
- https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/98ee7ec8e6808fcba4ca56ae438008c0/64069207009.pdf
- http://acpiindia.com/userfiles/file/visaxaxiwalibabidenun.pdf
- http://verduciautodemolizioni.it/userfiles/file/mirebiwune.pdf
- https://shared401k.com/wp-content/plugins/super-forms/uploads/php/files/6b13c9c89edf9de6fb487aa913241019/33414495727.pdf
- https://estigotours.com/wp-content/plugins/super-forms/uploads/php/files/a3e526909029c1ddf3eac29d8696264e/dukixiso.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c226e30ea35---diwokoxixixomawegopawewap.pdf
- https://amerismithenterprises.com/wp-content/plugins/super-forms/uploads/php/files/323cbd652c61d60e9d0f857aa2fb835d/jonivataniroxawugilaso.pdf
- https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/bpca04u1gevua18q057jte0inl/moralizutuwebugebele.pdf
- https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/b1a343e4acf526608dc0d1e7d1552924/zapigalijo.pdf
- https://liniagdanskzydowo.pl/files/38183338943.pdf
- http://kystop.com/wp-content/plugins/super-forms/uploads/php/files/chc63ick8akb86q35dhhsu4so6/jewukoreli.pdf
- http://guides2alpes.fr/uploads/file/8438757245.pdf
- http://aivieksteslaivas.lv/userfiles/file/9380734160.pdf
- https://cashmeredreams.com/wp-content/plugins/super-forms/uploads/php/files/7de978d2390460528dedc6f68397f468/69431384375.pdf
- http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/4d5bpp7ccs5gt8u3t510nkbl03/giweterozowu.pdf
- https://uclerbaklava.com/resources/file/26264629896.pdf
- https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608bf0d2a0479---tadanotapavovenopedigavuk.pdf
- 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_off00010d14.bind33d294c20668a73b7d92b0894d101a6886c4c644d75a4b8c19034a686ee27a7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D14 | 10716 bytes |
font_01_sfnt_off000125f7.binfbb89f52d6edc2c829b8eb6c33ade0404da17b311566d31f4313a03617cfb24b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x125F7 | 17792 bytes |
font_02_sfnt_off000154a2.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x154A2 | 16792 bytes |
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