MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.
Machine Learning
- Nyx PDF Classifier malicious score 0.9990
Heuristics 7
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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=practice+questions+for+class+4+maths PDF link annotation
- https://laetitiabernard.fr/images/file/pupimofutokekedoxesomiwon.pdfIn PDF document text
- https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b4cbccbcc1---judasigizatejerawolumiz.pdfIn PDF document text
- https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/c04f2c4cd7de681ecc899e269c62012a/67930437560.pdfIn PDF document text
- https://al-farh-iq.com/upload/userfiles/file/72208406146.pdfIn PDF document text
- https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/480792e70e16d383984aec33de2536fb/taboporulunazobeworemi.pdfIn PDF document text
- http://timeyear-v.com/userfiles/file/tobuv.pdfIn PDF document text
- http://dianacb.cz/userfiles/file/bexad.pdfIn PDF document text
- https://blagoustroystvo24.ru/ckfinder/userfiles/files/gururasuxemafenejeke.pdfIn PDF document text
- http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/160b9c805cf4bc---13911310280.pdfIn PDF document text
- http://architettoseneca.com/userfiles/files/sirin.pdfIn PDF document text
- http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160706b225dad8---farumapomifife.pdfIn PDF document text
- http://www.monts.sk/upload_images/file/tuxemilavodojujarozop.pdfIn PDF document text
- https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/90a80016950c718fca5fcae869ab81d5/senokijanubelupuv.pdfIn PDF document text
- http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607d07e37a077---fovowawenasebuvog.pdfIn PDF document text
- http://www.adatechotomasyon.net/wp-content/plugins/formcraft/file-upload/server/content/files/16084034039ac0---17332878806.pdfIn PDF document text
- http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad88c701e27---49694525349.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d941.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD941 | 5336 bytes |
SHA-256: 3068f12723aabd9090fd0e2b8700b8d74c088a6f2cbfa7047208fc5a7eeb9933 |
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font_01_sfnt_off0000eb42.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB42 | 10436 bytes |
SHA-256: bc24f79e2a8a59e1db151c080e20d3295e1ab201764d208926f78017b9344b00 |
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