MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external links, many pointing to compromised WordPress uploads or disposable hosting, suggesting a link farm used for redirection. The presence of embedded URLs and the heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggest the document's purpose is to redirect users to potentially harmful websites, likely for phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
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=format+to+write+diary+entry PDF link annotation
- http://mydreamtuscanwedding.com/editor_up/81625617955.pdfIn PDF document text
- http://anpharma.net/upload/files/78120273349.pdfIn PDF document text
- http://tsrmvolontari.it/userfiles/files/51739591594.pdfIn PDF document text
- https://tidurmalam2.com/contents/files/83518822643.pdfIn PDF document text
- http://tz5168.com/uploadfile/image/2021/10/02/file/20211002_202331_103.pdfIn PDF document text
- https://iuoshili.com/upload/users/files/93049152041.pdfIn PDF document text
- http://corporatiegids.nl/uploads/files/merogexi.pdfIn PDF document text
- http://wowbond.com/upload/Fckeditor/file/2683282957.pdfIn PDF document text
- http://www.insight-assessment.com/ckfinder/userfiles/files/65823543938.pdfIn PDF document text
- http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16156503676839---50346154090.pdfIn PDF document text
- https://polaria.cz/images/file/jenesetunuzomir.pdfIn PDF document text
- http://wingmanresearch.com/userfiles/files/89882535240.pdfIn PDF document text
- https://alohasafaris.com/files/luzigidal.pdfIn PDF document text
- http://masterkontroll.hu/ckfinder/userfiles/files/14421897894.pdfIn PDF document text
- http://zpb-maciejewski.pl/upload/fck/file/rogukunikojexupomufim.pdfIn PDF document text
- http://metall-press.ru/files/zutijavuke.pdfIn PDF document text
- https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/reo62oi70n7g73tlmtsffph2r0/vubodijatud.pdfIn PDF document text
- https://seger.cz/userfiles/file/22150936843.pdfIn PDF document text
- https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/54a82dbe717431dbb975ac8f96a6d1ec/bikopopexavopeturagolepu.pdfIn PDF document text
- https://millersexpress.com/userfiles/file/mozewivinajuliw.pdfIn PDF document text
- http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16132eb6facda5---kabiluvegozuwez.pdfIn PDF document text
- http://quatanggiabao.com/images/uploads/files/16222013479.pdfIn PDF document text
- https://woft-dining.com/webroot/editor-uploads/files/jubuwenidizewazuzigar.pdfIn PDF document text
- http://freeorden.com/media/file/lojavofaniresekonefozar.pdfIn PDF document text
- http://miryangpension.com/FileData/ckfinder/files/20210914_27763594B19110C9.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_off0000af79.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAF79 | 10372 bytes |
SHA-256: 21039fd521f1bba31bd76464a5667ca0a9398339a957aeaedc15402e5b1e045d |
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font_01_sfnt_off0000c6ec.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC6EC | 14636 bytes |
SHA-256: 4848c22ed33dfa74cdf097de589afcc88ae7c1fc3458e2eb2bff1a49392656b6 |
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font_02_sfnt_off0000ec0f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC0F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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