PDF malware analysis — malicious · 79379a05189de70c

MALICIOUS

PDF

72.2 KB Created: 2021-10-01 02:18:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15

MD5: e90e673a8e4ee600143f8f937e74416c SHA-1: e3af7c414de36ef54fcd3fead4dc616fe1dfde3b SHA-256: 79379a05189de70cb3ce72a31aab215a2bb7352d388bdea0ad02512d78e861ce

156 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9965

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://pistant.ru/uplcv?utm_term=smart+switch+android+enterprise PDF link annotation
- https://e-tta.com/app/webroot/userfiles/files/94971550104.pdfIn PDF document text
- http://lgassociates.in/uploads/wirivifinelevedizaxix.pdfIn PDF document text
- https://alshamiltrading.com/alshamilfiles/file/22896566161.pdfIn PDF document text
- https://johanbjerke.se/userfiles/file/poloratodasep.pdfIn PDF document text
- http://ghettaetamionarchitetti.it/userfiles/files/80245211154.pdfIn PDF document text
- http://katachizu.com/img/news/files/vunexulazoji.pdfIn PDF document text
- https://dmitrovka-zn.ru/admin/ckfinder/userfiles/files/9138409012.pdfIn PDF document text
- http://lawyersmarketingusa.com/user_upload_image/file/In PDF document text
- https://dcoderesearch.com/uploads/jufudukotef.pdfIn PDF document text
- http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/65a6621da0bf6037e6da85f5e4923c73/62548784221.pdfIn PDF document text
- https://lescourailleurs.com/upload/editor/file/94800633024.pdfIn PDF document text
- https://pointswestliving.com/ckfinder/userfiles/files/20721336313.pdfIn PDF document text
- http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613a2ca6cb309---bijopawotagoxabadetewed.pdfIn PDF document text
- https://beauty-full.ru/uploads/files/50699882359.pdfIn PDF document text
- https://peisheng.org/uploads/ckfiles/files/6153571c47805.pdfIn PDF document text
- https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/92d1407c108c153b3bf81b3085f6c357/rafepola.pdfIn PDF document text
- http://sportsgarten.com/editorData/file/85513394850.pdfIn PDF document text
- https://xtremefitksa.com/ckfinder/userfiles/files/zevafelikiz.pdfIn PDF document text
- http://fireprovietnam.net/luutru/files/9063466735.pdfIn PDF document text
- http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613939ab00d43---5743138720.pdfIn PDF document text
- https://www.naabelectric.com/userfiles/files/36221550122.pdfIn PDF document text
- http://hftyby.com/upload_fck/file/2021-9-2/20210902231156741164.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_off0000b161.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB161	18768 bytes
SHA-256: `2f8557d4453acc31bf1b094e1c73bb135b9ceba8796df3aaa6f4a35d06c95728`
`font_01_sfnt_off0000e234.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE234	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off0000fa4b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFA4B	10892 bytes
SHA-256: `55bb9e821782882d118f133245234db6b90e0f0f1cf007db16b5b6b6773fa980`

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