MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites and are structured as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically identified as phishing or a trojan. The presence of multiple links to potentially malicious content suggests an attempt to direct users to external resources for further compromise.
Machine Learning
- Nyx PDF Classifier malicious score 0.9968
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://happycustomerservice.com/wp-content/plugins/super-forms/uploads/php/files/853d88746a6027842bbe96e55fe9e24a/18371894714.pdf
- http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/1614a22db0266c---63844408764.pdf
- http://sutipatika.hu/userfiles/files/kuses.pdf
- http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/161488da499348---30035960051.pdf
- https://cowichanmusicfestival.com/userfiles/file/64173599573.pdf
- https://groupekineconcept.com/userfiles/file/11999009108.pdf
- http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614b141b9ca06---kagedosogibalanuxet.pdf
- http://dierenwinkelindex.nl/images/uploads/47733466941.pdf
- https://virtualpulse.eu/UserFiles/file/85298660424.pdf
- https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/c4iot3qmc4j89a0dbrpqb3ga94/kekadusewadawonuma.pdf
- https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/qt70bl9rd5ihaa8neevrc53e7m/biwipozazimutonanel.pdf
- https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/0a0c17b8a628e501a70930c8441e5d07/waxagevagadadotos.pdf
- http://modernplating.com/userfiles/file/55455315363.pdf
- http://szhlfz.net/upload/9044029063.pdf
- https://locoffice.ru/userfiles/file/10525462781.pdf
- https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/dc4a76ac11bb047d57588928deb878a0/45835034510.pdf
- http://www.jindatunnel.com/up_files/file/94422082673.pdf
- https://study-go.info/wp-content/plugins/super-forms/uploads/php/files/deae68695daf24541ddc0eca2891cd21/44618344382.pdf
- https://www.hkha.org/ckfinder/userfiles/files/73359483818.pdf
- https://www.sesc-am.com.br/Selecao/ckfinder/files/wemifikupobumexadexalab.pdf
- http://thangmayedex.com/webroot/img/files/vitofilenexusagupi.pdf
- http://dishandspoonproductions.com/ckfinder/userfiles/files/pewituzudosizut.pdf
- http://www.travelwithtaangoo.com/img/file/6849621096.pdf
- https://advance-pack.com/editor_upload/file/71120956921.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=how+to+encrypt+android+tablet
- 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_off0000b096.bin3f145fe32b1f7262ec26dc6f450fd679c42c3b6ea2f8a5f018143e5082fe2140 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB096 | 15512 bytes |
font_01_sfnt_off0000d7ac.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD7AC | 16792 bytes |
font_02_sfnt_off0000efc3.bin79e87b05879df5c50e34066edd3a3591f1caf4997a293ffc755e644424f193ff |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEFC3 | 10668 bytes |
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