MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains numerous embedded URLs, many pointing to compromised WordPress sites, and others to disposable hosting, indicating a link farm designed to redirect users to malicious content. The presence of these links strongly suggests a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9964
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://chcial.ru/uplcv?utm_term=portion+of+physics+class+12
- https://lion-trading.co.uk/wp-content/plugins/super-forms/uploads/php/files/lqvpbr6qq8dvchhbt56vq7dv5q/42450571878.pdf
- http://www.radanhorse.com/resource/files/62208198923.pdf
- http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca0cdd92d8---93027627656.pdf
- https://cosalesrep.com/wp-content/plugins/super-forms/uploads/php/files/dae19843c1d5eafda325891eb4c87a67/51496672493.pdf
- http://driscollandgibson.com/images/edit_images/file/49149951167.pdf
- https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/6e31782bb32a666aed90f9ded02e306c/gusolowasenimitip.pdf
- http://debschoen.com/userfiles/file/65153201148.pdf
- https://tractorpulling-emmeloord.nl/upload/file/36662858208.pdf
- http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160745e336ef64---79670391146.pdf
- http://beytarimcilik.com/admin/editor_resim/file/zawifigenijesikewijomomap.pdf
- https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/dbpaoqfudmanlc8slbeh0ks552/batawasefokaxakurejowet.pdf
- https://la-klamm.org/userfiles/file/86760082773.pdf
- http://cephedanismani.com/images/pages/file/24159344465.pdf
- https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9bb539c02---27118714191.pdf
- https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/e6f278e06cacc1138dca8e44e35cad96/81708395232.pdf
- https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ac485d40c09---15616214601.pdf
- https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/ceee3956fb76d12343d32aaca6d242a5/gefedetotunabumosapewe.pdf
- https://acrgroup.nl/userfiles/file/56562021150.pdf
- http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ef6b43b37f---48594147731.pdf
- https://actioncoach.com.my/wp-content/plugins/formcraft/file-upload/server/content/files/160ac14e03ada4---xewudidalitegu.pdf
- https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d295fb83fe---favugifolegowo.pdf
- http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16071f62f3fadd---vujenet.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_off0000efb5.binf94de17da1f175bee854b74bb551d091c0685f71f6d18e51dcd9aa3e617488c8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEFB5 | 17268 bytes |
font_01_sfnt_off00011d04.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11D04 | 16792 bytes |
font_02_sfnt_off0001351b.binb6f42356ef41af73e57b19a02f027bb8ac55d2db0e9edd1e2d4c772e78ab1f09 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1351B | 10732 bytes |
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