PDF malware analysis — malicious · ff8eebdf7f4b185e

MALICIOUS

PDF

83.0 KB Created: 2021-07-06 23:20:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14

MD5: 6ab3999d9b6309749322d7c071af0e79 SHA-1: 47b7963d30fd55393db94a14f3166fc7c3e277a9 SHA-256: ff8eebdf7f4b185ea4f307108129b0dc1f91770bbbe78dde637613232e14da08

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document functions as a link farm, directing users to numerous compromised websites and disposable hosting domains. These links likely serve to distribute further malware or conduct phishing attacks.

Machine Learning

Nyx PDF Classifier malicious score 0.9833

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM

PDF 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.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small 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.
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The 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.
Embedded URL info EMBEDDED_URL

One 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://gingerbreadvillage.org/clients/e/e3/e396b250b60561adcb946853f9f62e29/File/28134966357.pdf In PDF document text
- https://noddy.nu/images/file/95573879786.pdfIn PDF document text
- https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/189d1fa928476f47b3a8e350c860aafd/14506064575.pdfIn PDF document text
- https://cihangirhotel.com/upload/ckfinder/files/jufutusebukofifegamij.pdfIn PDF document text
- http://www.supercarrentalsofmiami.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607036b0570af---wutakuxawagebowonakapag.pdfIn PDF document text
- http://w-f-l.de/user_img/file/xopigexezuxujuwubupenemu.pdfIn PDF document text
- https://bluebeakbranding.com/wp-content/plugins/super-forms/uploads/php/files/55495f038fa8f08beb93aba170035442/sabanukeresel.pdfIn PDF document text
- https://aprilboya.com/userfiles/file/99969731128.pdfIn PDF document text
- http://fixafilm.se/userfiles/file/83099932342.pdfIn PDF document text
- https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/160714e1066126---10985631601.pdfIn PDF document text
- https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/160859c5eaa59d---57255102471.pdfIn PDF document text
- http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/cfc81b68cd639a3afc3a9ec97e76a7f2/94011710647.pdfIn PDF document text
- https://yssnewlessons.org/UserFilesTwo/file/57055321655.pdfIn PDF document text
- http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/204b78f304f2e241b0d325f9fa2c2006/barawutirerawaruguzub.pdfIn PDF document text
- https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a508792f4a4---magosufa.pdfIn PDF document text
- https://www.dartmusicfestival.co.uk/wp-content/plugins/super-forms/uploads/php/files/49d5dff641e8af549d77a9b16e369363/videtewutusujugodu.pdfIn PDF document text
- http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c736c7df110---31612695562.pdfIn PDF document text
- http://prinsart.ro/uploads/files/logesukup.pdfIn PDF document text
- http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3c0fa469b7---redel.pdfIn PDF document text
- http://arcdesantmarti.com/biocop/Images/images-editor/file/70196180650.pdfIn PDF document text
- http://www.lifestaralberta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c441c881b56---21425663698.pdfIn PDF document text
- https://megalightgroup.lv/uploads/files/41596581474.pdfIn PDF document text
- https://patidarpalanpur.com/web/k/main_admin/ckfinder/userfiles/files/71730653625.pdfIn PDF document text
- http://wojno-stal.pl/pliki/file/fasonipabupamo.pdfIn PDF document text
- https://www.pennlighting.com/wp-content/plugins/super-forms/uploads/php/files/9fef6e2683130bc9792f5291ae6a84d6/pajolakuw.pdfIn PDF document text
- https://daleel.global/wp-content/plugins/super-forms/uploads/php/files/90q6os5qkrf0nc7ub58b811mjf/xilakuwefamakula.pdfIn PDF document text
- https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/d3bee6d225d23c0a2abc1bfc22e281f6/rorazetixawazoxawapo.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=convert+miles+per+hour+to+kmPDF 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_off0000e1de.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE1DE	17052 bytes
SHA-256: `c38bb0045f21691d5c50b34881a78df0fada694ad74d870e91a55f1aa9fdfdd8`
`font_01_sfnt_off00010e74.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10E74	10644 bytes
SHA-256: `5a9ea589b3981ac811eddc971b4b5a09a5f2890b658054bbf6332ad6464059ea`
`font_02_sfnt_off000126aa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x126AA	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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