MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by a machine learning classifier and ClamAV as malicious. It functions as a link farm, containing numerous URLs that point to compromised WordPress upload directories and other disposable hosting. These links likely lead to further malicious content or phishing pages, indicating a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
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://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/684di6pqmq7gge66mhl1dhgdrj/98412900322.pdf
- https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/2d9c70799c702fc43ac741b0eba10a4d/naxozigarafop.pdf
- https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/5ff2ef935fcd96a67441e7a5aad74263/59489954670.pdf
- https://weinquartier.at/wp-content/plugins/super-forms/uploads/php/files/0aa12120e3d0c7c6b6a6dd825f4aea7b/59737449965.pdf
- http://auto-spec.ca/fck/file/97406846023.pdf
- http://tuanayapim.com/rsm/files/78680628528.pdf
- http://waltripclassof74.com/clients/8/87/875eff38522a6836d9fda94c5a2b6b26/File/potikosusuvika.pdf
- http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606ccb2e8f27d---tokavegabokixexosumirana.pdf
- http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609a4177bb935---77752771397.pdf
- https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/e7555e8d1cd3a875cfd90762b1253bae/70620259140.pdf
- https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b97a552eb5e---77699961261.pdf
- http://luchetti.it/userfiles/files/19647620667.pdf
- https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081e0f83b9ca---nejurokuzelawib.pdf
- http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3875a3b0dd---fivuvivanenufimij.pdf
- http://pericosrentcar.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1607d57f9bad10---pumeti.pdf
- http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b1fcba2f819---46361152769.pdf
- http://anatolianlgs.com/userfiles/file/89661865988.pdf
- http://harasim.cz/uploaded/files/buwofavefiwotawuvurig.pdf
- http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/16094593b2cede---megisuvugixusuvuper.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609452cd34cf0---89757618315.pdf
- http://ottotech.center/userfiles/file/71434764421.pdf
- http://progfin.pl/userfiles/file/nadetarubadevedeje.pdf
- http://nandeestationery.com/userfiles/files/6276305765.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=fit+excel+to+one+page+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_off0000dda4.bin551d41c02275bb808914163392908b1b97574e835f566b30b0d36ab8f2187f9b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDDA4 | 10608 bytes |
font_01_sfnt_off0000f5c4.bin4d5c07ac2cf6d53a2c8d5fcae844cecc85ea325b1723e9b6efed564cb23a5737 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5C4 | 16884 bytes |
font_02_sfnt_off0001219f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1219F | 16792 bytes |
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