PDF malware analysis — malicious · 4e32245f2278d6da

MALICIOUS

PDF

85.6 KB Created: 2021-07-30 14:25:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19

MD5: ab98bfa9a32d097d36db07184a8f5ead SHA-1: 91482d0b1c8ef4143cd017a6e685301cde6f2b6e SHA-256: 4e32245f2278d6da1d83e4172da8d4363c1e684d1eb6091a1a89bafe5edb6eb9

156 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9990

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://laborke.ru/uplcv?utm_term=year+3+maths+practice+questions+pdf PDF link annotation
- http://boxerdapolenta.com/cmsimple/images/file/1254437045.pdfIn PDF document text
- https://tripleccompanies.com/wp-content/plugins/super-forms/uploads/php/files/859f38b6f9e9889db3258a7694ccd02a/fevesigivi.pdfIn PDF document text
- https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/ce800eaa9102d4c59df81f10629ff7f8/16348495131.pdfIn PDF document text
- https://victory-agency.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad9f3a0b2b9---28836756868.pdfIn PDF document text
- http://begemot-rus.com/uploadfiles/file/2021062318460873499.pdfIn PDF document text
- http://hanhthien.net/uploads/file/nusonofum.pdfIn PDF document text
- http://topimmigrationlawyer.org/ckfinder/userfiles/files/suvoxawawuzivap.pdfIn PDF document text
- https://cuatudongbinhduong.net/uploads/files/29403497483.pdfIn PDF document text
- https://growlocals.com/wp-content/plugins/super-forms/uploads/php/files/29835b51bf76fd6fe508d519a21c8cf8/92648211719.pdfIn PDF document text
- https://www.charroninc.com/wp-content/plugins/super-forms/uploads/php/files/265062386654eb2f0cee56c47c0d83ba/75243969553.pdfIn PDF document text
- http://kaies.cn/upfiles/file/52497253198.pdfIn PDF document text
- http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607371b193911---siretunexigizizu.pdfIn PDF document text
- https://wentworthre.com/wp-content/plugins/super-forms/uploads/php/files/d3d7abe236fbbba44afdf17c593c4b31/vodotewura.pdfIn PDF document text
- http://temple.mo/userfiles/file/88032987756.pdfIn PDF document text
- https://tecnibat.net/uploads/archivos/79010569869.pdfIn PDF document text
- https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160cc600343750---sopojanobemetudamuzoj.pdfIn PDF document text
- http://www.naraihillgolf.com/admin/userfiles/file/31000168612.pdfIn PDF document text
- https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/rn5tkd911fdmd8lom2lengvvs4/46047545842.pdfIn PDF document text
- http://mofrantech.com/userfiles/file/futanisapigikuve.pdfIn PDF document text
- https://thefertilizergranulator.com/d/files/86021063683.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_off0000eb37.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEB37	11240 bytes
SHA-256: `039462d086be5167a6d71bb10ac9248046e9a55f2b9475ac428211646a01a4cc`
`font_01_sfnt_off0001053f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1053F	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00011d51.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11D51	16964 bytes
SHA-256: `49992a2b9b6a8ef266a973856d1d4136547651a10af115c37b0362a8901d2f9c`

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