MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The file is identified as a malicious PDF by multiple heuristics and a machine learning classifier. It contains numerous embedded URLs pointing to compromised websites, suggesting a phishing or malware distribution scheme. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics indicates a tactic of using link farms on potentially compromised infrastructure to obscure the final malicious destination. The ClamAV detection further confirms its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9961
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://smidgel.ru/uplcv?utm_term=literature+review+in+research+methodology+pdf PDF link annotation
- https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1614238573dec5---xalizaf.pdfIn PDF document text
- http://maychaybocaocap.com/app/webroot/uploads/files/76716732539.pdfIn PDF document text
- http://bowie.abwingsmd.com/uploads/files/29327389726.pdfIn PDF document text
- http://kingsap.com/file_media/file_image/file/guzogirim.pdfIn PDF document text
- https://atkarisuli.hu/userfiles/file/dolotefobafudoti.pdfIn PDF document text
- http://ingore.cn/upload/files/37962095825.pdfIn PDF document text
- http://ledins.lv/cms/file/61708434277.pdfIn PDF document text
- http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/161410e1d6898b---63043489731.pdfIn PDF document text
- http://njchemland.com/upload/files/tuvejovazokamumopem.pdfIn PDF document text
- http://yildizteknikelektrik.net/resimler/files/60839364980.pdfIn PDF document text
- http://kommunikator.nu/demo/userfiles/file///28714545423.pdfIn PDF document text
- http://nordicwalkingturak.hu/_user/file/87049429530.pdfIn PDF document text
- http://nacyc.jp/Upload/file/40359123622.pdfIn PDF document text
- https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/acf0b60558f6d03705f323674b039289/tajijoxejodebarino.pdfIn PDF document text
- https://uzsienis.cvzona.lt/resources/img/files/rudix.pdfIn PDF document text
- https://ncltandatbar.com/home/ncltandat/public_html/dowalumniusa/ckfinder/userfiles/files/riselukoluwerakuwol.pdfIn PDF document text
- https://marblo.ph/app/webroot/img/files/60313186251.pdfIn PDF document text
- https://semsaesp.com/ckfinder/userfiles/files/tefuxuveporozifoku.pdfIn PDF document text
- https://dobski.pl/userfiles/file/47544354194.pdfIn PDF document text
- http://fuzoku-kyujin.jp/ckfinder/userfiles/files/gilovamoke.pdfIn PDF document text
- http://vizugy.hu/uploads/files/simogas.pdfIn PDF document text
- https://alienaquatics.com/home/gb/public_html/ckfinder/userfiles/files/bemusesopalob.pdfIn PDF document text
- https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/5k878hmueud69oel3krlipndoa/powelol.pdfIn PDF document text
- http://isotech.si/uporabnik/file/59508350226.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_off00013183.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13183 | 18512 bytes |
SHA-256: 81024d3fd3516d9812d9798cee14596140242abf062011ab23c7cbf8e993b8c4 |
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font_01_sfnt_off000161eb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x161EB | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00017a02.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x17A02 | 11388 bytes |
SHA-256: 3ef908b4e57bea2361d1f1cf0c8ee29089068546b7f30351720a32fc18520e1c |
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