MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF document contains a link farm pointing to numerous compromised WordPress upload directories and other disposable hosting sites, each serving another PDF file. This behavior is indicative of a phishing or malware distribution campaign, where the initial PDF acts as a lure to redirect users to malicious content. The ML classifier and ClamAV detection strongly support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9952
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://wildpflanzen-planung.de/file/xenesuwetakatutamux.pdf
- http://carsongrad75.com/clients/3/35/35717660c32d3dd9b0ffde8f33a19d23/File/geniwinosoxajakananul.pdf
- http://biosite.ru/images/news/file/24866485893.pdf
- http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609410f98ec26---nujirewewadolarixajovifa.pdf
- http://mtlebanon62.com/clients/5/5e/5ee551a8be14a26d7d76bc5e90dd1372/File/59479867470.pdf
- http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/8f0acced5bd5def6b278f56cb307c934/4085334912.pdf
- https://bluebeakbranding.com/wp-content/plugins/super-forms/uploads/php/files/27bdaf7307381e59ec7de5556bbfd95c/67875948995.pdf
- http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/6362jifsj1c2lsgv1t38tshnr4/22092881614.pdf
- https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/5798ad1b3392003e801ac3ff897155d9/fiviwa.pdf
- http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607beea3628a7---newumizojufosufuwopor.pdf
- https://www.couleurs-et-jardin.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160c86021d3ecc---duzixusowunutakidiliku.pdf
- https://www.apartamentselsllacs.com/wp-content/plugins/super-forms/uploads/php/files/iojoirivvunni11atk7uf21kbf/14631702234.pdf
- http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/q54u7rmut1lhkld3vfjojr8e0k/fewiwisurijapipina.pdf
- http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abb5b931ffd---30906384098.pdf
- http://botosani.ro/img/uploads/file/sotosab.pdf
- https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/02909f8962865fc168ecf1e39d3c542b/83565345153.pdf
- http://kino-profi.com/wp-content/plugins/super-forms/uploads/php/files/d1b48dffb112aeab67ba13107198c1da/fulemumalum.pdf
- https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/kqv1mbsl7oon8tuicmaq4o0lu6/zijijuzukeguxoxa.pdf
- https://thesaddlebank.com/wp-content/plugins/super-forms/uploads/php/files/akog3vhotq3dv6hsmi4co78re2/ligaji.pdf
- https://infravoip.com/wp-content/plugins/super-forms/uploads/php/files/d4ac721a6a65f89168b02f89cd57ad54/tugikedaxotaxuketulofig.pdf
- http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075ca6a9d940---pizora.pdf
- https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/51c03270d11c91bd9ce437c3ddae00bd/piroxumowolegivil.pdf
- https://hashtag.school/userfiles/file/26210612962.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=emphysema+and+pulmonary+hypertension
- 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_off0000f0ca.bind952684579c3fab21c4182e778cc0e8d082c5fb99a71ba3b8f3f1fc37cbf8cfc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF0CA | 16776 bytes |
font_01_sfnt_off00011c24.bin28bc365314889817f0ba77aad022a3791a8656f6875ad886a76f22df6e471816 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C24 | 10856 bytes |
font_02_sfnt_off000134fa.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x134FA | 16792 bytes |
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