MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm or redirection mechanism. The presence of PDF-specific heuristics like PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM further supports the attack pattern of redirecting users to potentially malicious content. No scripts were extracted, but the overall structure and URL findings point to a phishing or malware distribution lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9822
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://crewmak.ru/uplcv?utm_term=a+mrna+molecule+is+produced+by PDF link annotation
- https://ascinfratech.com/clientprojects/trading/file/77829408100.pdfIn PDF document text
- http://studiocinti.eu/userfiles/files/jagulubodazasasigus.pdfIn PDF document text
- http://ed-web.cz/userfilesfile/79402389345.pdfIn PDF document text
- http://aiswaryamatrimonials.com/fck_uploads/file/pagidifuribuzigajibonumir.pdfIn PDF document text
- https://ilc.ua/wp-content/plugins/super-forms/uploads/php/files/ddno23d8nb8pmjgjrpsn02gh54/34377348303.pdfIn PDF document text
- https://popcouncilinstitute.org/wp-content/plugins/super-forms/uploads/php/files/660910fc41b88ea7e3a140c3a26563a8/78671298671.pdfIn PDF document text
- http://avtoarka.ru/wp-content/plugins/super-forms/uploads/php/files/591798e2773bb67db317bff296b2ccc0/zefefekadijilarilexozu.pdfIn PDF document text
- https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606f06025b44e---pipokufapobovitefisefanu.pdfIn PDF document text
- http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/16084edeb4fa71---tiguvigewurikato.pdfIn PDF document text
- https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d6adae5ba7---nisumuzamow.pdfIn PDF document text
- http://www.celso.org/download/nevigawixupirazavalel.pdfIn PDF document text
- http://ajivikafinance.com/userfiles/file/deneluxagunajujinivitop.pdfIn PDF document text
- https://proxus.nl/file/45039386531.pdfIn PDF document text
- http://cephedanismani.com/images/pages/file/zutakuzezekuzila.pdfIn PDF document text
- http://eugensa.lt/app/webroot/uploads/userfiles/files/21008319360.pdfIn PDF document text
- https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c48ffb6e080---10265408742.pdfIn PDF document text
- https://anmoul.com/userfiles/file/wixemeku.pdfIn PDF document text
- http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/160834b0319af9---2863222223.pdfIn PDF document text
- http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/160769487475aa---tedobi.pdfIn PDF document text
- http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078768238652---jedutolonujuduzabi.pdfIn PDF document text
- https://kurek-rowery.pl/user_pict/file/163272424.pdfIn PDF document text
- http://kythuatviet.vn/uploads/userfiles/file/barimidexupogigabu.pdfIn PDF document text
- https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/160bdcfd38c474---fabefixedoj.pdfIn PDF document text
- https://haps.company/wp-content/plugins/super-forms/uploads/php/files/53mlhrboh37h5v7qtmoflj68h5/77274952540.pdfIn PDF document text
- https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/d37a1ee31c87d08be4d981856dee77a0/vobixonosorojipagefu.pdfIn PDF document text
- https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/5ejsulqvvnlkit43cji58jhbh0/57285405290.pdfIn PDF document text
- http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093184654179---19728243060.pdfIn PDF document text
- https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/f28b3394110d1496b036d8927be9de22/xasewifakejavudigesinoje.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_off00010aed.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10AED | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off00012304.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12304 | 10912 bytes |
SHA-256: 29ef8b4c34524377add243370444677cd3d831c267944ca9c2a3422afb321703 |
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font_02_sfnt_off00013bfb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13BFB | 16444 bytes |
SHA-256: 9d90de8a7be99b5564b6f77c335851ccb91b901a8a205c2a2746b97e396f93d4 |
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