PDF malware analysis — malicious · 3dd40c4abf1caaf9

MALICIOUS

PDF

83.9 KB Created: 2021-09-08 18:49:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-26

MD5: e704d44a622b7ca4c7b1e29460d8da38 SHA-1: 85d4fd87c1ad8c267592a46eed1f29f9f8409a7a SHA-256: 3dd40c4abf1caaf9c4e5a6958ed06907586d602d663d1693e759c32c17bfe79c

156 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9964

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 https://magazinul-de-instalatii-sanitare.ro/app/webroot/files/userfiles/files/dolimu.pdf In PDF document text
- https://wscnaturalhealings.com/wp-content/plugins/super-forms/uploads/php/files/b2eef8eb387762aaeff83ed51da65632/29205649871.pdfIn PDF document text
- http://onthebroadway.com/CPD/adminpanel/upload/file/63832848907.pdfIn PDF document text
- https://medicabg.com/uploads/wysiwyg/files/80746810187.pdfIn PDF document text
- http://giadinhlaurenso.org/upload/files/keforokod.pdfIn PDF document text
- http://chinawin-consult.com/userfiles/fotijafelejilijexom.pdfIn PDF document text
- http://zzzwchem.com/upload/files/zenujovatotena.pdfIn PDF document text
- https://martas.vodrsport.cz/uploads/files/84426466670.pdfIn PDF document text
- http://romengo.com/ckfinder/userfiles/files/42841323375.pdfIn PDF document text
- https://jaurrieta.net/USERFILES_JAURRIETA/files/merosa.pdfIn PDF document text
- https://espritgt.com/userfiles/file/1974096809.pdfIn PDF document text
- https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16132a7c4c7bd9---67314100041.pdfIn PDF document text
- http://datavincity.com/uploads/ckfinder/files/93533170968.pdfIn PDF document text
- https://www.partyshuttlebus.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161356096111e7---53719089424.pdfIn PDF document text
- http://makeyourpartnermelt.com/userfiles/file/bukisurasifefafamofiza.pdfIn PDF document text
- http://exmar.it/foto_fck/file/zexaxizipogijaxoweni.pdfIn PDF document text
- http://mmckno2010.zkosuchdol.info/files/lunabapodijujutonawajimu.pdfIn PDF document text
- http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/d599ee5f8c69ebaea36d61b6fc158201/69116615175.pdfIn PDF document text
- https://ph789.com/pinhsuan/files/file/18154386539.pdfIn PDF document text
- http://beming.com/ressource/site-image/files/nuxorukogupuzisiva.pdfIn PDF document text
- http://termosystem.pl/userfiles/file/57955666003.pdfIn PDF document text
- http://chapraptti.org/userfiles/file/84402230605.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=surah+al+kahfi+dan+terjemahan+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_off0000dab6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDAB6	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000f2cd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF2CD	10872 bytes
SHA-256: `78f7fbb5d7eb3adbc607b042d1e4411c9e6361098ec09bec40f1e8dfec90be88`
`font_02_sfnt_off00010b9f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10B9F	21236 bytes
SHA-256: `712b5cf277d564ba434cc4d0e91aee50bca0ad89121ce678e25eed7f7cc1b44b`

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