MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous links, many pointing to disposable hosting or compromised CMS upload directories, characteristic of a link farm used for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or delivering a secondary payload via these links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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=types+of+lutheran+churches PDF link annotation
- http://capitaloffice.pl/fotki/file/44607716806.pdfIn PDF document text
- https://banderlogclub.ru/Files/file/vebakefujaruvozaxivatomuf.pdfIn PDF document text
- http://elhammagazine.com/ckfinder/userfiles/files/30761063929.pdfIn PDF document text
- http://unibox.lv/files/text/17442976570.pdfIn PDF document text
- https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/16babb1a1fdffddcf77e9c64314a29c5/70848974299.pdfIn PDF document text
- http://amblesidewindermere.ca/fckuploads/images/file/jomadojibajovulatarojuzo.pdfIn PDF document text
- http://k9careclinic.in/ckeditor/ckfinder/userfiles/files/94272192801.pdfIn PDF document text
- http://asfalon.com/__files/file/bojizabapikusi.pdfIn PDF document text
- http://archiw.bibliotekalesmierz.eu/img/upload/files/xidilavarobomepoliboz.pdfIn PDF document text
- http://italiangreyhound.pl/img1/userfiles/file/24211252504.pdfIn PDF document text
- https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614cf0595e890---56312040580.pdfIn PDF document text
- http://alfonsoguiggiarchitetto.it/userfiles/files/57963816100.pdfIn PDF document text
- http://anhuifan.com/upload_fck/file/2021-9-22/20210922044333194308.pdfIn PDF document text
- http://rigosarchitects.gr/userfiles/file/64147964891.pdfIn PDF document text
- http://kbidc.kr/upload/editor/file/1632687160.pdfIn PDF document text
- http://ptk-astana.kz/wp-content/plugins/super-forms/uploads/php/files/3dc0983f3f5e1fb144393d6a286f1ea8/2216998354.pdfIn PDF document text
- https://protrialse.eu/files/files/50355005202.pdfIn PDF document text
- https://ceramicasvillaflor.cl/UserFiles/File/wosonitibugije.pdfIn PDF document text
- http://hydrogears.com/survey/userfiles/files/jibijisibijekiramawo.pdfIn PDF document text
- http://www.saaegfpolis.org.br/ckfinder/userfiles/files/tomafivorotagis.pdfIn PDF document text
- https://www.pirkitpadangas.lt/ckfinder/userfiles/files/nefefun.pdfIn PDF document text
- http://www.lnk-creation.fr/upload/file/3404276557.pdfIn PDF document text
- http://xyr59.com/filespath/files/20210913073307.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_off0000df02.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF02 | 19776 bytes |
SHA-256: 68e8aa014ed793244cff047a86bc0ce149558144a6858bcc3663c2230b345c59 |
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font_01_sfnt_off000112ba.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x112BA | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00012ad1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12AD1 | 10660 bytes |
SHA-256: d4555efbe54ad917911b4fae4c8cb910913b25daedef97fe0f17040403d88fe7 |
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