PDF malware analysis — malicious · 3dd60d9518113839

MALICIOUS

PDF

83.6 KB Created: 2021-09-18 09:36:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-26

MD5: a04694b2307fae05ab2d7a338e133098 SHA-1: 26a20cf26cb5e98abb4ba9ecde895ca4726e1e60 SHA-256: 3dd60d95181138399ecb563c197c834cc260aa653ddfd537d99a080ec2ccc42d

156 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9992

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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 https://garglob.ru/uplcv?utm_term=adjective+that+begin+with+c PDF link annotation
- http://mycoapaisyl.com/webimages/files/16154010956.pdfIn PDF document text
- https://learnrkbin.jugalbandiresearch.com/ckfinder/userfiles/files/sotuworin.pdfIn PDF document text
- http://skrutit-probeg.ru/upload_picture/file/kiroxunu.pdfIn PDF document text
- http://hanasushimenifee.com/uploads/files/4848568877.pdfIn PDF document text
- https://www.natursany.com/ckfinder/userfiles/files/fozunudadovanizuk.pdfIn PDF document text
- https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/e8febfdbb90df4935f955a317a400c83/jeziwojavusajaw.pdfIn PDF document text
- http://hstairan.com/FCKeditor/editor/filemanager/connectors/php/userfiles/file/juruperutowowa.pdfIn PDF document text
- http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/e0b15c4d6173e24c18bacd557695afcc/magumojidewiruxepefepavug.pdfIn PDF document text
- http://vocal.bpv.su/content/files/files/66984079364.pdfIn PDF document text
- http://sinostandards.net/upload/files/zamusemofiwox.pdfIn PDF document text
- https://spcinternational.in/ckfinder/userfiles/files/83877190700.pdfIn PDF document text
- http://www.travelwithtaangoo.com/img/file/digugovejulifiluvomomilob.pdfIn PDF document text
- http://szamosiszerviz.hu/feltoltott/files/88505224739.pdfIn PDF document text
- http://www.como-grup.ro/fisiere/file/nesakanozusinuruji.pdfIn PDF document text
- https://capitalsyndic.com/userfiles/file/nixujerepokuzudagoja.pdfIn PDF document text
- http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614257e6ef87c---11576865734.pdfIn PDF document text
- https://exam11.menapoint.com/app/webroot/upload/files/vedozopujejatozam.pdfIn PDF document text
- https://iasvn.org/Images_upload/files/83887318292.pdfIn PDF document text
- https://bostoncake888.com/UserFiles/files/74215007051.pdfIn PDF document text
- http://utcsp.rustyramone.com/uploads/files/30612451075.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_off0000e5d9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE5D9	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000fdf0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFDF0	10620 bytes
SHA-256: `b44027ee610762b4dcceacd4e873400e84d844cad64b93ea255938623d997796`
`font_02_sfnt_off000115f4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x115F4	16916 bytes
SHA-256: `4c137bebeca457219dc818f0cc13e4a00bad10a10b97c1a3920bd93f71c5b623`

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