MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and a machine learning classifier. It contains numerous links to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt, likely initiated via a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9921
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://synerhu.ru/uplcv?utm_term=how+much+does+operation+manager+make+at+amazon PDF link annotation
- http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f9e886bf92---98124615318.pdfIn PDF document text
- http://rghsalumni.com/clients/82979/File/mufamawowana.pdfIn PDF document text
- http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/160aae13129da4---jobipus.pdfIn PDF document text
- http://abwlanham.com/uploads/files/4830345847.pdfIn PDF document text
- http://www.onlinetemsilci.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607994a428d36---25248133053.pdfIn PDF document text
- https://ivanda-commerce.hr/userfiles/file/73386809812.pdfIn PDF document text
- https://www.glasswindowequipment.com/wp-content/plugins/super-forms/uploads/php/files/bac689dfd60bd6a251d01670353408eb/pebobesizewuviloxov.pdfIn PDF document text
- http://icwest78.com/clients/67591/File/5841881309.pdfIn PDF document text
- https://2acontractor.it/images/file/wesonumijuwosamuwoze.pdfIn PDF document text
- http://cochu.net/resimler/files/xokojebeduxuzowolotiv.pdfIn PDF document text
- https://hotelmitrutarija.com/uploaded/files/853297034.pdfIn PDF document text
- http://divorcefinance.nl/uploads//file/3532733861.pdfIn PDF document text
- http://kiszelyugyvediiroda.hu/docs/file/77598062935.pdfIn PDF document text
- http://cetinelektrik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1610c533d5eb23---93312228209.pdfIn PDF document text
- http://techsystem.gr/data/uploads/ckeditor/files/kuwomilodube.pdfIn PDF document text
- https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3a9e06e636---nufopus.pdfIn PDF document text
- http://riskhedgetech.com/uploaded/file/73616188460e6073195755.pdfIn PDF document text
- http://jinshi66.com/uploadfiles/files/banijobebokidusenozi.pdfIn PDF document text
- http://cosmeticdermatologymiamibeach.com/uploads/data/files/39126585016.pdfIn PDF document text
- https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/16072a75903e8d---46971729183.pdfIn PDF document text
- http://hglobaltourb2c.com/FileData/ckfinder/files/20210808_2D42E265D445C305.pdfIn PDF document text
- https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16081fcd3a3e20---bajomala.pdfIn PDF document text
- http://matchedtubes.de/userfiles/file/50041150883.pdfIn PDF document text
- http://e2ingenieros.com/ckfinder/userfiles/files/pajumarorus.pdfIn PDF document text
- https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/9f0qagh1sjldpq2f69tecq9e6q/24534195218.pdfIn PDF document text
- https://maxim-catering.de/wp-content/plugins/super-forms/uploads/php/files/fqrm1cj5n7gqf0lpo6mqbh2enk/numisafoxorubatujosigivu.pdfIn PDF document text
- http://bolshunoff.ru/images/wysiwyg/file/jinukogukuwugazivigisujud.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_off00013677.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13677 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00014e89.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14E89 | 19968 bytes |
SHA-256: c0cb2500f27a068ea5e5343219567cd70b38f28c75e7512a84a7262f287d67b6 |
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font_02_sfnt_off0001825a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1825A | 11244 bytes |
SHA-256: 5188d02ed072f98287a90dbe8a6a3261466b361abdd8b4d8fd337829fca4f456 |
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