PDF malware analysis — malicious · d3e9711884f2d701

MALICIOUS

PDF

87.1 KB Created: 2021-09-10 20:23:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-20

MD5: dce3f13e4cc788a18a7e06533b7249f8 SHA-1: debbd410ab2c775d6da4eb696b99688129b3f061 SHA-256: d3e9711884f2d7012d235cc27057bc040d77cd253a80adc7e0b93216939e817b

96 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9948

Heuristics 5

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://digicpictures.com/downloads/tofudewulafarivi.pdf In PDF document text
- https://stiff.pl/ckfinder/userfiles/files/82445463809.pdfIn PDF document text
- http://sun-green.eu/ckfinder/userfiles/files/17039325490.pdfIn PDF document text
- http://prepearl.com/uploadsfile/6018948977.pdfIn PDF document text
- http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a2d9c647f1---40388486716.pdfIn PDF document text
- https://bkairconditioner.cloud4demo.com/uploads/files/69904524056.pdfIn PDF document text
- http://pushgroup.lv/userfiles/files/dotinugevazenabatem.pdfIn PDF document text
- http://yachtandgulet.com/userfiles/file/lipadikanarugutagut.pdfIn PDF document text
- http://pc75.net/upfiles/file/1631292807.pdfIn PDF document text
- http://www.gieskestukadoors.nl/ckfinder/files/files/4477497510.pdfIn PDF document text
- http://tks-forever.com/upload/2021/09/03/file/38486008006.pdfIn PDF document text
- http://fourfoods.com/images/files/fefidobebek.pdfIn PDF document text
- https://tspinstruments.com/cache/fck_files/file/bigutudu.pdfIn PDF document text
- http://maychamsocda.vn/images/userfiles/file/magixoxijevaromuf.pdfIn PDF document text
- http://chocolatycakes.com/wp-content/plugins/formcraft/file-upload/server/content/files/161302f3d03a68---tiwatagemewanola.pdfIn PDF document text
- https://joinvita.com/neu/userfiles/file/6364710955.pdfIn PDF document text
- http://spokoino.ru/i/upload/files/23453610774.pdfIn PDF document text
- http://modernplating.com/userfiles/file/pomalapakimazotuzu.pdfIn PDF document text
- https://theurbanthinktank.com/files/65522490652.pdfIn PDF document text
- http://aktifimmo.lu/userfiles/files/tomarebetamude.pdfIn PDF document text
- https://haisanquangninh.org/data/dulieu/files/winifakapujudetugofufidov.pdfIn PDF document text
- http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1613b8d200dd47---lepagopudinuzajerili.pdfIn PDF document text
- http://studiolauramoschini.it/userfiles/files/80836035006.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=sort+the+court+cheatsPDF 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_off0000ee49.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEE49	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off00010660.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10660	10260 bytes
SHA-256: `cedca679ee8dd3b97bf8422bfa5ab2d5529ffdd930eba5e7f20925eb037c5d60`
`font_02_sfnt_off00011d95.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11D95	19224 bytes
SHA-256: `307b368d2745c6fa8dd1e3b546a9c9beb883791d64fe0babeefc55fc68088ceb`

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