PDF malware analysis — malicious · 78299cd3dc305b62

MALICIOUS

PDF

76.6 KB Created: 2022-04-17 06:59:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-16

MD5: bcdc42af9e6481d27cb885317fe7eebb SHA-1: 9a4f589af5253eeec96d464c8655e13bd4c69eb1 SHA-256: 78299cd3dc305b62a21d87f0325dc87697e959e66097015583665870fca04900

194 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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://yubit.co.za/YmrXLWy8?keyword=beginner%20piano%20songs%20with%20letter%20notes%20pdf PDF link annotation
- http://chialun.yun2u.com/upload/files/99867866381.pdfIn PDF document text
- https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/1624eb0edb88c5---98032320838.pdfIn PDF document text
- https://tudiputowol.weebly.com/uploads/1/3/1/4/131452732/5960444.pdfIn PDF document text
- https://visepawil.weebly.com/uploads/1/3/0/7/130776118/34295.pdfIn PDF document text
- https://vukibawurop.weebly.com/uploads/1/3/4/6/134601902/romaredilunev.pdfIn PDF document text
- https://golobixapisiz.weebly.com/uploads/1/3/4/6/134653183/d6cd74e54ba377.pdfIn PDF document text
- https://jadojojipolukot.weebly.com/uploads/1/3/5/3/135337887/xubasajetasefut-jeridexegoziw.pdfIn PDF document text
- http://lyzebrno.cz/userfiles/file/42277524080.pdfIn PDF document text
- https://wlweb.co/sites/default/userfiles/file/30535180600.pdfIn PDF document text
- https://ligofaxudatejot.weebly.com/uploads/1/3/0/7/130739538/datozamokenetu.pdfIn PDF document text
- https://wisufomerimugil.weebly.com/uploads/1/3/4/0/134016782/bufobeziw.pdfIn PDF document text
- https://dovolena-jiznicechy.cz/uploads/valefedapo.pdfIn PDF document text
- http://sinhorelli.com/userfiles/file/jijafarivinamox.pdfIn PDF document text
- http://promastersecurity.com/sites/default/files/file/pipelivula.pdfIn PDF document text
- http://www.klub112.cz/upload/files/vejatutenenexiguvirala.pdfIn PDF document text
- https://www.albispanaderia.com/wp-content/plugins/super-forms/uploads/php/files/099491a5d09b6826540107ad8ca3f4ac/xezemedutopiwakut.pdfIn PDF document text
- https://vutojakapejir.weebly.com/uploads/1/3/4/8/134895653/xoweroduxosel_losanerezepepet_titepamo.pdfIn PDF document text
- https://tevupuzenoxa.weebly.com/uploads/1/3/6/0/136009769/tajado.pdfIn PDF document text
- http://soloparamideco.com/js/new/fckeditor/userfiles/file/todiwudezidi.pdfIn PDF document text
- https://sekatuxu.weebly.com/uploads/1/3/4/8/134894727/5678310.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_off0000c423.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC423	10916 bytes
SHA-256: `28b7f4aecc4657680641be9e03681d5656c4117a8183819eb916c251e352185b`
`font_01_sfnt_off0000dd2c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDD2C	17464 bytes
SHA-256: `d62dd4ae58c8174e0eb49b5b98816bd4e603ed21f92b7cf22d2cbf332b384dd5`
`font_02_sfnt_off00010a23.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10A23	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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