MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains an embedded JavaScript stream and numerous external URIs, many of which point to compromised CMS upload storage or are hosted on disposable domains, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly support a malicious classification. The embedded JavaScript likely facilitates the redirection or further malicious activity.
Machine Learning
- Nyx PDF Classifier malicious score 0.9958
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://pistant.ru/uplcv?utm_term=font+on+my+phone PDF link annotation
- https://hygradeinsulators.com/images/uploads/file/vudopuwidexapibovi.pdfIn PDF document text
- https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1614338e4b21e0---xubebopunexuwu.pdfIn PDF document text
- https://idroilektriki.gr/files/file/7533584116.pdfIn PDF document text
- http://gloteckr.com/upload/editor/file/lulorikapoxafofuz.pdfIn PDF document text
- http://nceed.kr/pds/userfiles/files/kimiripokiwawanidemapuwo.pdfIn PDF document text
- https://inprovitcentroamerica.com/ckfinder/userfiles/files/17958433867.pdfIn PDF document text
- http://www.ssc-ras.ru/ckfinder/userfiles/files/nosozugibifo.pdfIn PDF document text
- http://maihome.hu/admin1/file/motizazupijurul.pdfIn PDF document text
- https://pushtypathshala.com/demo/aims/files/images/files/duduxulapaj.pdfIn PDF document text
- http://banlinhkienlaptop.com/userfiles/file/mevipevemotepol.pdfIn PDF document text
- http://simsvizag.com/admin/uploadedfiles/file///30345749617.pdfIn PDF document text
- http://kiajihlava.cz/UserFiles/File/8037784049.pdfIn PDF document text
- https://chinatupai.com/web/js/ckfinder/userfiles/files/zunuja.pdfIn PDF document text
- http://keyflounge.nl/userfiles/file/vodurozoto.pdfIn PDF document text
- https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/7b0a3be1b8514f8fb566def9a28cea76/besaxizesuvitelefew.pdfIn PDF document text
- http://herfon-machinery.com/images/ckfinder/files/20210916141113.pdfIn PDF document text
- http://lycee-elm.com/userfiles/file/dasolixi.pdfIn PDF document text
- http://debeleven.net/UserFiles/File/53092731196.pdfIn PDF document text
- https://kvgrup.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/161411c90e5580---88458299511.pdfIn PDF document text
- https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613f23a56de39---dakeboni.pdfIn PDF document text
- https://familienbilstrup.dk/ckfinder/userfiles/files/4827101869.pdfIn PDF document text
- https://byocamacho.com/ckfinder/userfiles/files/65392012267.pdfIn PDF document text
- http://cn-biyoute.com/d/files/54880986017.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_off0000d3b2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD3B2 | 17812 bytes |
SHA-256: e57c02143c789f56472b37b0a1d2590c77f718079b62250bac512f4a74c2a60d |
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font_01_sfnt_off0001019e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1019E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000119b5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x119B5 | 10040 bytes |
SHA-256: f3d6ed3f4be3858532283f4a3842741c784017077fc2fb1e0ae11999c0a64f51 |
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