MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites and other domains, likely intended to lure users to phishing pages or download further malware. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports this, indicating a non-clustered link farm on disposable hosting.
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 https://wastran.ru/uplcv?utm_term=errorless+biology+2019+pdf+download
- https://polresseluma.com/assets/ckfinder/core/connector/php/uploads/files/77589010571.pdf
- https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/3a8d4545c424a6928ab4f270f2907f3d/18054486708.pdf
- https://law.com.sg/wp-content/plugins/super-forms/uploads/php/files/46bf546cf07f9cdcbb0c5bab8fe91b93/fojuzopolewatotasowakul.pdf
- http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/jshs59r2gm4pchlcads3gv89k7/binezofulafalixijebopak.pdf
- http://fisioterapiasuzzara.it/userfiles/files/sesoromibefige.pdf
- http://albino-pitti.com/pub_img/file/koberuf.pdf
- https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/49220832d0f602fb8638ad66f2115c87/65746171898.pdf
- https://myhoorayhealth.com/wp-content/plugins/super-forms/uploads/php/files/30c9446cd6588be8661f40978e959394/56705982639.pdf
- https://graveyards-fuj.ae/userfiles/files/97234060627.pdf
- http://gallery4walls.com/upload/editer/file/51422009722.pdf
- http://autoshiftbid.com/fckeditor/userfiles/file/41779868686.pdf
- http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bd7a1931f5b---40971593464.pdf
- http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e72daaa01d---73473729553.pdf
- http://homelife-superstars.com/image/files/rikokutujawilidibomaten.pdf
- http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1609bea95b62b7---timakazadowokozaxajesufa.pdf
- http://cyclad.org/UserFiles/file/vunijujopamametejomof.pdf
- https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090bf7e3a043---zezeliwini.pdf
- http://gr-chem.com/upload/files/30045840103.pdf
- http://bharatdarshan.net/rgroup/ckfinder/userfiles/files/60444742011.pdf
- https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/bf51e3a9f97e467f6dde8ce5eeb568d6/52136930330.pdf
- https://www.travelticket.com.au/wp-content/plugins/super-forms/uploads/php/files/eotbgdendal67icc1a623rg6t4/kenoxofu.pdf
- http://boulderdivorcelaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b843be8cc97---98736337532.pdf
- http://ticaproduce.com/ckfinder/userfiles/files/64550573237.pdf
- https://aildf.in/userfiles/file/86709934002.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_off0000dbfe.bin840c3056ef35ccc5aad2d62cbe29025a6850ae17a5b8d94735cddbf2a31c1db7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDBFE | 18692 bytes |
font_01_sfnt_off00010c9b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C9B | 16792 bytes |
font_02_sfnt_off000124b2.binda10c34a8217688a040d79835a45131f27cd5ec5942189a51407a238bb22047a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x124B2 | 11360 bytes |
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