MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript, which is a common technique for executing malicious code. Several heuristics indicate that the PDF acts as a link farm, pointing to compromised WordPress sites that host further PDF files, likely as part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9987
Heuristics 7
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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 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 https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c22d4134681---mimozutobowu.pdf In PDF document text
- http://blog.crowdly.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fcfb1d7eb0---vilakifebimis.pdfIn PDF document text
- https://xn--i1aam8cb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/c5ad57ff096fdff9a9be22e77f27af98/33569740703.pdfIn PDF document text
- https://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/okkfi9fgtcrhu2ulkbgbqst39s/gevipobi.pdfIn PDF document text
- http://files.ibiza-ferien.de/file/62665920669.pdfIn PDF document text
- https://csodamalom.hu/files/files/gasevadadewaxewunigul.pdfIn PDF document text
- https://bataretak.com/img/files/file/bonewuwodoxixugopedor.pdfIn PDF document text
- https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609ac0926f717---87845738202.pdfIn PDF document text
- https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/d3f68b93ebdef13a7cc98d47b8ac935e/kirunizipuvupeporid.pdfIn PDF document text
- http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/961d16781121d84fd44936602dbbaf23/mazizilikusenavisabosidag.pdfIn PDF document text
- http://yourhealthyanswer.com/ckfinder/userfiles/files/37143435518.pdfIn PDF document text
- https://www.sensormaticltd.com/app/templates/js/ckfinder/userfiles/files/jadigarigolese.pdfIn PDF document text
- https://bibliotheque.ville.deux-montagnes.qc.ca/ckfinder/userfiles/files/44625769579.pdfIn PDF document text
- http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607fbc1a080d7---69873914999.pdfIn PDF document text
- https://njsolarpower.com/wp-content/plugins/super-forms/uploads/php/files/d27d0c6af3ba4dfc6230f98f25f03aed/xanutimimeme.pdfIn PDF document text
- https://mimpishio2.net/contents/files/57048788606.pdfIn PDF document text
- http://podiummoda.ru/userfiles/file/8955991405.pdfIn PDF document text
- http://alliance-ic.ru/uploads/file/36100288672.pdfIn PDF document text
- https://wsbtitan.com/images/file/vaduxivavewamipujuvetezuf.pdfIn PDF document text
- http://www.sport-konyv.hu/userfiles/file/rewimagolitexopa.pdfIn PDF document text
- http://mkpstroitel.ru/upload/files/regitezida.pdfIn PDF document text
- https://seataclighting.com/wp-content/plugins/super-forms/uploads/php/files/de49c0792683f19948d30222e9b72e98/70476882670.pdfIn PDF document text
- http://idroter.org/userfiles/files/68382432345.pdfIn PDF document text
- http://arabic.cz/ckfinder/userfiles/files/ranamolomu.pdfIn PDF document text
- http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/qnjn3jhrsmahlbsr4d6vq9p737/goraxuv.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=fungus+like+protists+get+nutrients+byPDF 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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d0b2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD0B2 | 17028 bytes |
SHA-256: 4ce59f0b5ea21095fc9d92b6a33ef8f8792f66e7967f8748799f04872e776812 |
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font_01_sfnt_off0000fc0b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFC0B | 10688 bytes |
SHA-256: 8e7b4aaf75014ff1be01e8e49cad0c5d150763733144aaf074e5dab1a9ee3239 |
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font_02_sfnt_off0001146e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1146E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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