MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded links, many pointing to compromised WordPress sites or disposable hosting, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest this PDF is malicious, likely serving as a phishing lure or a distribution point for further malware. No scripts were extracted, but the heuristic firings point to a phishing or link-farming attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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=hide+and+seek+among+us+online PDF link annotation
- https://ringid.vn/ckfinder/userfiles/files/nodowepiriximatukivemeke.pdfIn PDF document text
- https://medius.sk/userfiles/file/xuwututaxulupudejumupema.pdfIn PDF document text
- http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161481d009ee48---lifevitememobewuwuke.pdfIn PDF document text
- https://el-tall.pl/pics/file/76880526293.pdfIn PDF document text
- https://autoradiator.mn/uploads/ckfinder/files/nemexawuvaj.pdfIn PDF document text
- http://donaldnathanlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/wevudedel.pdfIn PDF document text
- http://harmonie-avion.fr/actualite/files/dokojaxezapi.pdfIn PDF document text
- http://rassadaspb.com/new/files/file/63587870318.pdfIn PDF document text
- http://ouhkpthaa.org/userfiles/29343706967.pdfIn PDF document text
- http://lamekatus.ee/uploads/ckeditor/files/84711626255.pdfIn PDF document text
- https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613ac15292789---ravope.pdfIn PDF document text
- http://mebizstekla.ru/userfiles/file/26658017007.pdfIn PDF document text
- http://progfin.pl/userfiles/file/70498807671.pdfIn PDF document text
- http://year-c.com/upload_fck/file/2021-9-2/20210902022204192107.pdfIn PDF document text
- http://fotostudiovaccari.it/userfiles/files/nakovofutefimezuko.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130724ad73b1---97152722774.pdfIn PDF document text
- http://narnivet.com/userfiles/files/gitama.pdfIn PDF document text
- https://cecprint.com/images/file/76535773180.pdfIn PDF document text
- https://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/36682dd7f99ba873e6eb145b9a9b67d8/kapiwavuginu.pdfIn PDF document text
- https://akproauto.com/nbloom/fckuploads/file/15424972558.pdfIn PDF document text
- https://hanedantoptan.com/upload/files/lekuzowoderasitazoge.pdfIn PDF document text
- https://www.delaneyllc.com/ckfinder/userfiles/files/77497547357.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_off0000b25d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB25D | 15680 bytes |
SHA-256: ad7f670449a307cd5ec437e6fed19ac3616c0111e3510bb16842d61615244851 |
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font_01_sfnt_off0000daa9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDAA9 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000f2c0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF2C0 | 10576 bytes |
SHA-256: 5c9316551dddea0a1c1903565f047ee9a7fb9a3f722c84535c8ce43e6227a629 |
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