MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs that point to various domains, many of which appear to be compromised WordPress sites or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a link farm structure, suggesting the primary purpose is to redirect users to external sites. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent, likely phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
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://krisoc.ru/uplcv?utm_term=definition+of+soft+palate PDF link annotation
- http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135275e29ccd---45587082264.pdfIn PDF document text
- https://kuzeyilac.com/resimler/files/37687274335.pdfIn PDF document text
- http://dansecyr.ca/pdf/file/8452248912.pdfIn PDF document text
- https://deloge-nt.fr/media/photo/file/kixuja.pdfIn PDF document text
- https://kibledergisi.net/resimler/files/54122575655.pdfIn PDF document text
- http://jeykrishnaclub.com/images/file/lupukubezevusubatuvaxuzi.pdfIn PDF document text
- http://irollee.com/userfiles/file/ledov.pdfIn PDF document text
- http://rehahomecare.com/upload/editor/files/tejuvuwuza.pdfIn PDF document text
- http://fastcredit.ge/userfiles/file/85297005783.pdfIn PDF document text
- http://jewelry-shopping-city.com/uploads/files/202110031455528039.pdfIn PDF document text
- http://ijdssymposium.eu/upload/64083052323.pdfIn PDF document text
- https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/4ffd684d16330d28f3dad238af2c8a6c/7796976733.pdfIn PDF document text
- https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130e771c90c8---pitow.pdfIn PDF document text
- http://sbnjl.com/userfiles/files/68121702179.pdfIn PDF document text
- https://autoroman-service.ro/imagini_ws/tuloroketip.pdfIn PDF document text
- http://fapannimario.it/userfiles/files/lopojojojiwidusekug.pdfIn PDF document text
- http://world-housing.jp/ckfinder/userfiles/files/begasu.pdfIn PDF document text
- http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16159ea8bafc0c---21826310851.pdfIn PDF document text
- https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/38ef1a3484f9b5bfc945dd6a5c1f62d6/10677100585.pdfIn PDF document text
- https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/06cdee408cd31c07e7411281ac5c08a0/watinovojipapupunugemiv.pdfIn PDF document text
- https://postelezmasivu-olomouc.cz/ckfinder/userfiles/files/tofadiwokobidogufovu.pdfIn PDF document text
- http://fujieshubao.com/zk/UploadFile/file/2021100506443573499.pdfIn 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://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ef00.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF00 | 10252 bytes |
SHA-256: 533762139ad6e3567e754c63d9795703d5c9da11cba8f84918a2efb5f5c2fa3a |
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font_01_sfnt_off0001062e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1062E | 20560 bytes |
SHA-256: 304f76b1cdca88210b2441a04de3926d7dfc4a4c2fb4b246903da552c0651128 |
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font_02_sfnt_off00013a06.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13A06 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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