PDF malware analysis — malicious · 191d42a89f55c4d4

MALICIOUS

PDF

83.2 KB Created: 2021-09-10 12:44:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22

MD5: e6837ae1c86a86f1efe477c8232d02ac SHA-1: 700b8bd91debd0bd67fd7ce35c9e16e3b2f7c663 SHA-256: 191d42a89f55c4d44cb86a08763380df40fd19f5599b3e72c823be5ef2914531

164 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9964

Heuristics 7

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.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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://chcial.ru/uplcv?utm_term=summoners+war+5+star+summon+cheat PDF link annotation
- http://tourgrodno.by/images/content/file/lonebedevapom.pdfIn PDF document text
- http://2ds-creations.fr/userfiles/file/jupet.pdfIn PDF document text
- http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/161388af76c18d---7881439808.pdfIn PDF document text
- http://architects-desk.com/uploadsfile/pabolanawidugizi.pdfIn PDF document text
- http://client.diffuse.info/files/kabikevuroritejozaxafipu.pdfIn PDF document text
- http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16131697bbf688---10267404039.pdfIn PDF document text
- http://www.halpellet.hu/userfiles/files/23059341652.pdfIn PDF document text
- https://www.leasing.net.in/ckfinder/userfiles/files/49937803524.pdfIn PDF document text
- https://tideandtigers.com/ckfinder/userfiles/files/27507732664.pdfIn PDF document text
- http://aurangabadptti.com/ckeditor/ckfinder/userfiles/files/20167766274.pdfIn PDF document text
- https://syntellect.ru/Repository/file/31994831910.pdfIn PDF document text
- http://dotykbylinky.sk/_subory/subory/71291126854.pdfIn PDF document text
- https://premiumvipbusiness.com/wp-content/plugins/super-forms/uploads/php/files/d19b0096b821d567fd62d6d33ff0d569/gebasogo.pdfIn PDF document text
- http://krakow4you.pl/krakow/files/33688212946.pdfIn PDF document text
- https://akonis.ch/userfiles/files/92373982138.pdfIn PDF document text
- http://etasystem.net/userfiles/files/82887022056.pdfIn PDF document text
- https://emotionalgift.com/ckfinder/userfiles/files/vetedakolebinude.pdfIn PDF document text
- https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131c5e8f3645---22930747136.pdfIn PDF document text
- https://0800-707-808.com/upload/ckfinder_temp/files/20210904040939.pdfIn PDF document text
- https://quangtriasianwindow.com/uploads/image/files/8931071722.pdfIn PDF document text
- http://popmetre.com/news/files/71034261385.pdfIn PDF document text
- http://garage-fuji.jp/js/upload/files/41306035555.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_off0000daab.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDAAB	10752 bytes
SHA-256: `3150a6224f32db649f855b7a21eea542aaa331c283801daabc52f0acaeda6c19`
`font_01_sfnt_off0000f353.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF353	19980 bytes
SHA-256: `cdade6008be3487eb87ab896f364fc7146987b9bb11c9b812843646bb8e5fe19`
`font_02_sfnt_off00012789.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12789	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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