MALICIOUS
204
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains embedded JavaScript and numerous links pointing to potentially compromised WordPress sites, suggesting it functions as a link farm for phishing or malware distribution. The presence of algorithmically generated URLs further supports this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9769
Heuristics 8
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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 to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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 http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160727e702bebb---94589189264.pdf In PDF document text
- http://tsutae-f.com/js/upload/files/gogibenalumikumor.pdfIn PDF document text
- https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160807f0530478---18625434797.pdfIn PDF document text
- https://nowbali.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/160965bc3c5f5a---fukawobujibudenudam.pdfIn PDF document text
- http://dent-pro.cz/pic/file/jezepazimopi.pdfIn PDF document text
- http://sibmetiz.ru/upload_picture/fenigesuvizike.pdfIn PDF document text
- http://jonkmp.nl/img/cms/file/ragivivit.pdfIn PDF document text
- http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608de2c660fbd---lumaborare.pdfIn PDF document text
- http://diversecityuk.com/userfiles/file/folabuxilojuziremefivin.pdfIn PDF document text
- https://fruitssupplier.com/app/webroot/img/files/20351771478.pdfIn PDF document text
- https://tirthmobile.com/wp-content/plugins/super-forms/uploads/php/files/tatv16tigdj2ikmcqanfl39d2a/10539934795.pdfIn PDF document text
- http://vmkmsz.hu/userfiles/file/sanowoledazorob.pdfIn PDF document text
- http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c03865b32dc---64209948631.pdfIn PDF document text
- https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/hmgn64qd0gla9c6tlnhnq7toa9/nufudozu.pdfIn PDF document text
- http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160a7243939e83---96866591330.pdfIn PDF document text
- http://www.netcorp.hu/data/editorfile/80050663072.pdfIn PDF document text
- http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/3spgam02dp9c53bm7hg65dbn31/rizusodudajuzuri.pdfIn PDF document text
- https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/a2b6b484ec5492c79c528afaa9f7390a/6483895700.pdfIn PDF document text
- http://thingsantiquesla.com/userfiles/files/gadobinubotimarizerobe.pdfIn PDF document text
- http://emotionpicturesfestival.gr/userfiles/file/gekutuvovirubeketuzexuseg.pdfIn PDF document text
- https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7929f85653---loledijezolifofi.pdfIn PDF document text
- http://autoscuolavalerio.it/userfiles/files/nasifalugagadutuzivu.pdfIn PDF document text
- https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/7d833af7a87743891a45ed68b7c474ad/88335792536.pdfIn PDF document text
- http://lotusromeo.fr/app/webroot/files/userfiles/files/93666222674.pdfIn PDF document text
- https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/70d1539fc6af0ec8131185f8cca57e9d/47807972.pdfIn PDF document text
- https://mymango.ru/wp-content/plugins/super-forms/uploads/php/files/8d388dffa7bd80d4ec8d6485252afe3c/voderututok.pdfIn PDF document text
- http://www.stallionreadymix.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a7bbf77309f---wajuw.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=75.1+kg+to+lbsPDF link annotation
- 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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0001003a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1003A | 10128 bytes |
SHA-256: 81c521a38562c7f3adc6616577c232fff9bf4688ab9bb1a5aadf9ec2bf368cb0 |
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font_01_sfnt_off0001170a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1170A | 1668 bytes |
SHA-256: 21496ec7d819a181ecd5b04ef0af2d966874359b7a5f1303baf82341d98c4b9a |
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font_02_sfnt_off00011eef.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11EEF | 20004 bytes |
SHA-256: 71881393b46bdd282f48272c6201e7305667aeed0acb9c1eb173adc7dba94c8d |
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font_03_sfnt_off00015292.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15292 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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