PDF malware analysis — malicious · c5d41daa83d55194

MALICIOUS

PDF

79.8 KB Created: 2021-09-16 17:57:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28

MD5: 79fe09e9bd9b1102f83fcc7968a98447 SHA-1: 8a7203d787743c6d0b89f5e6a7d6a79dd776bf90 SHA-256: c5d41daa83d55194865b384a36ac97a2351a31463248847344a12b1edd004893

156 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9981

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 http://www.mueblesgamez.com/ckfinder/userfiles/files/35859085337.pdf In PDF document text
- https://xn--bren-mgenwil-gcbf.ch/sites/default/files/fck-uploads/file/16355005811.pdfIn PDF document text
- https://www.casestilistas.es/ckfinder/userfiles/files/gukivoj.pdfIn PDF document text
- https://selapro.com.au/application/third_party/ckfinder/userfiles/files/jejosopelim.pdfIn PDF document text
- https://bunyaminerdemir.com/resimler/files/boxosunidarofiji.pdfIn PDF document text
- https://snowcat.pl/admin/ckfinder/userfiles/files/46240341972.pdfIn PDF document text
- https://emotionalgift.com/ckfinder/userfiles/files/mojorik.pdfIn PDF document text
- https://www.mftelhas.com.br/adm/Editor/ckfinder/userfiles/files/31505044967.pdfIn PDF document text
- https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161329e3d818a4---dosixe.pdfIn PDF document text
- https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/7f9b938d666e2f234a38366f3cdec364/zezoziludekesegipefitese.pdfIn PDF document text
- http://austria-ex.com/images/blog/file/90692173864.pdfIn PDF document text
- http://am-assets.com/aom/magnolia/userfiles/file/jatuxideluvedov.pdfIn PDF document text
- https://marblobathware.ph/app/webroot/img/files/47165874947.pdfIn PDF document text
- http://dywin.com/uploadfile/files/11762035783.pdfIn PDF document text
- http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16138fc137d26e---86055214356.pdfIn PDF document text
- http://stlnsk.ru/uploads/file/tusaxumafesebifaxuz.pdfIn PDF document text
- http://okzawidow.pl/img/upload/files/bavejorigijizaw.pdfIn PDF document text
- https://kamionosnyelvlecke.hu/userfiles/file/bupato.pdfIn PDF document text
- https://botroul.be/uploads/gozumidimugajonunax.pdfIn PDF document text
- http://landpas.pl/upload/file/natimapijegiwem.pdfIn PDF document text
- http://czernavendeghaz.hu/admin1/file/78165525878.pdfIn PDF document text
- https://dehaventransportation.com/home/de/public_html/ckfinder/userfiles/files/gapawosoroworojubusagexo.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=apa+7th+edition+in+text+citation+examplePDF 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_off0000d42d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD42D	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000ec44.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEC44	10644 bytes
SHA-256: `b64934db9649fc87ee4ed62ce70a996f6a132cbc31bb6ee71b33dc38ecbbd1e2`
`font_02_sfnt_off00010489.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10489	17316 bytes
SHA-256: `f696a57727e18d8054fb3e3826c7b6fb6dbb04031a374fa8671daad08886d061`

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