MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious destinations. The presence of these URLs and the heuristic findings indicate an attempt to distribute malware or conduct phishing attacks.
Machine Learning
- Nyx PDF Classifier malicious score 0.9985
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://huntic.ru/uplcv?utm_term=story+sequencing+worksheets+grade+1 PDF link annotation
- https://www.horisunmauritius.com/wp-content/plugins/super-forms/uploads/php/files/38dd1726716a7da97fab6b15d9970dcb/maludonexiwuweferedik.pdfIn PDF document text
- http://czdashan.cn/uploadfile/file/2021050405590473499.pdfIn PDF document text
- http://ddgasul.com/userfiles/file/jofezapenawarupuw.pdfIn PDF document text
- https://makojudo.pl/zdjecia/fck/file/17478261843.pdfIn PDF document text
- http://ultraljud.nu/bild/files/saganoradipanepigelas.pdfIn PDF document text
- https://giorgiosantinelli.it/file/55240303030.pdfIn PDF document text
- https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/uabh4132th3abc5kj4n9gdmvi4/punokobamodorozovu.pdfIn PDF document text
- http://djpress.pl/Image/files/63728354761.pdfIn PDF document text
- https://balustrady-metalik.pl/files/pajowifipomapipola.pdfIn PDF document text
- http://ping-property.com/user_img/files/24876433831.pdfIn PDF document text
- http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbf45e8bc2d---vorowezisodugana.pdfIn PDF document text
- https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/30jj2ueaa1pb1mubp6njiu4f7c/70145585160.pdfIn PDF document text
- http://udmvdpo.ru/images/files/nazajexabakapamu.pdfIn PDF document text
- http://xingyeknitting.com/userfiles/files/tuxemotidusojifovefiti.pdfIn PDF document text
- https://chowdhurytourism.com/ckfinder/userfiles/files/1290173328.pdfIn PDF document text
- http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/ff7880dc5e18c3c80fbe398185049df4/43377171694.pdfIn PDF document text
- http://flynewsletter.com/uploads/file/18470961757.pdfIn PDF document text
- http://jessie.vn/images/ckeditor/files/waxilixesisib.pdfIn PDF document text
- http://heizler.hu/files/file/rozafoziboguvogugon.pdfIn PDF document text
- http://petgears.com/app/webroot/files/file/zijixudez.pdfIn PDF document text
- http://alexlunacoach.com/img/editor/file/fokixunakuba.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_off0000d28a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD28A | 21396 bytes |
SHA-256: c30b5611b26576037440d7476c671882ae8011cec772e3e6ae543a71a99c6171 |
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font_01_sfnt_off00010b53.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10B53 | 11268 bytes |
SHA-256: 770f90b6cf4e963b71e9690e0fcdee991ebae5b1812af71bc2bef14b4424d809 |
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font_02_sfnt_off0001255f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1255F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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