MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories, contains embedded JavaScript and uses an image-based lure. Specific URLs and indicators for this sample are listed in the indicators section.
Machine Learning
- Nyx PDF Classifier malicious score 0.9909
Heuristics 8
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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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Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LUREPDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 70 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
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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://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160bc3c0487ff4---galelinole.pdf In PDF document text
- https://www.mppoa.cloudlinesystems.com/assets/ckfinder/userfiles/files/kowaxepekumupojuwo.pdfIn PDF document text
- http://bikaji.zohukum.com/ckfinder/userfiles/files/tiditotobofelitezesu.pdfIn PDF document text
- https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/u56idkr5dip6e5jkkbbrors78p/75457101731.pdfIn PDF document text
- http://allseasonsart.com/uploads/fck_uploads/file/31564735999.pdfIn PDF document text
- http://ondrejkocar.cz/img/file/dimerelefijurutevapile.pdfIn PDF document text
- https://ijtm.in/userfiles/file/paruvenaxutewoki.pdfIn PDF document text
- http://logistra.fr/ressource/site-image/files/58634325213.pdfIn PDF document text
- http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1606d2b1db1ab7---42190237174.pdfIn PDF document text
- http://www.mustwalge.ee/data/content/files/61703346020.pdfIn PDF document text
- http://styropapex.pl/userfiles/file/vufoturutuperikozuwane.pdfIn PDF document text
- http://hongdacable.com/d/files/biwebofegokomurof.pdfIn PDF document text
- https://jurad.eu/files/file/mupijojamezuxifesu.pdfIn PDF document text
- https://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/b3d4838cf1c93a3b41146736e6198934/jedofometosot.pdfIn PDF document text
- http://sziszolg.hu/editor_up/jawewobuxegojer.pdfIn PDF document text
- https://ehlibeytalimleri.com/resimler/files/kipipetetaxabado.pdfIn PDF document text
- http://3asoft.vn/img/files/kewigupoxago.pdfIn PDF document text
- http://fd-health.com/upload/ckeditor/files/54179526916.pdfIn PDF document text
- http://xaydungphongphu.com/uploads/files/vekoripi.pdfIn PDF document text
- http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160df5a6d21d1f---tedoreluzefesitit.pdfIn PDF document text
- http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606f039d9640a---jagefirexupu.pdfIn PDF document text
- https://joyfool.art/wp-content/plugins/super-forms/uploads/php/files/d67e2ef620eda3e0b99b72fce6fd4421/21617872394.pdfIn PDF document text
- https://kund-in.com/userfiles/file/fipit.pdfIn PDF document text
- http://ecohost.ru/pics/images/file/nujipemisev.pdfIn PDF document text
- http://gold-carsales.com/js/upload/files/15689741763.pdfIn PDF document text
- https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c7359031054---95321287270.pdfIn PDF document text
- https://viajespereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098a3a455468---bosub.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=erp+implementation+guide+pdfPDF 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_off0000b74f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB74F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000cf61.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCF61 | 14276 bytes |
SHA-256: 387d2baaf7f36badfefaf36cf80a75465c779a7c007282f98bdfeb07a70f8980 |
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font_02_sfnt_off0000f2b0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF2B0 | 10756 bytes |
SHA-256: 975c9519e1059b7192c8c58692b6776bd9b5ef3221f13dd11977b3f34a3dfe5c |
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