MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains embedded JavaScript and numerous external links, many pointing to disposable hosting or compromised CMS uploads, indicating a phishing or malicious redirection attempt. The ClamAV detection and ML classifier strongly suggest malicious intent, likely to exploit vulnerabilities or deliver further payloads via the linked sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9961
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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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=best+500mb+offline+games+for+android PDF link annotation
- http://buyyoutubecomments.com/ci/userfiles/files/sisuwuduj.pdfIn PDF document text
- https://emailing-online.fr/uploads/userfiles/file/wexokegibuwomulalu.pdfIn PDF document text
- https://economiadecomunion.com/ckfinder/userfiles/files/gekiwarabidutuxijelese.pdfIn PDF document text
- https://speculatio.in/ci/userfiles/files/xasugefijubu.pdfIn PDF document text
- http://thegrcinstitute.org/app/webroot/js/ckfinder/userfiles/files/16635793848.pdfIn PDF document text
- https://ahha.az/userfiles/file/97009799206.pdfIn PDF document text
- https://ag-concept.ru/wp-content/plugins/super-forms/uploads/php/files/be90a02f2558811b8384752a5be43f3e/80948789644.pdfIn PDF document text
- http://vertex-decor.com/userfiles/file/81947006039.pdfIn PDF document text
- http://xindeshiye.com/uploadfile/file///2021091400025124.pdfIn PDF document text
- http://thebookmarkcafe.com/uploads/files/sujafuxaxusojupiguz.pdfIn PDF document text
- https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/vldppnmhve86m9v1rmav4ed1bv/razaxezufamapukezapux.pdfIn PDF document text
- https://maviet.vn/upload/files/55705450813.pdfIn PDF document text
- http://idroter.org/userfiles/files/49541324424.pdfIn PDF document text
- http://ng-sons.com/userfiles/file/laweduraluxunakarino.pdfIn PDF document text
- https://kolkataangikar.org/ckfinder/userfiles/files/jizanuvogojunatagukipudo.pdfIn PDF document text
- https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/161413af6f1039---78152451885.pdfIn PDF document text
- http://majortaylorride.info/images/uploaded/file/ninolep.pdfIn PDF document text
- https://posaonakosovu.com/ckfinder/userfiles/files/papakuki.pdfIn PDF document text
- https://masihpt1.com/contents/files/dezujeg.pdfIn PDF document text
- http://livestocktool.com/d/files/netutozaxumoxujovaxoleda.pdfIn PDF document text
- http://changrung.com/ckfinder/userfiles/files/28078551560.pdfIn PDF document text
- http://gammatradings.com/userfiles/file/rurivi.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_off0000e7ff.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE7FF | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00010011.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10011 | 18160 bytes |
SHA-256: fa048898ee8a459034e4e7b7b216cbb10db71764268617e58fa3841d938af8a8 |
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font_02_sfnt_off00012f67.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12F67 | 11144 bytes |
SHA-256: c725bd1d30cb9a21bcef2c059c6934690cb6099390187cb65e8e90b7031eb5fc |
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