PDF malware analysis — malicious · 478736b6f391e767

MALICIOUS

PDF

80.3 KB Created: 2021-10-09 02:00:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-20

MD5: f20a599129a370c3e18f04af6cdde725 SHA-1: 4c0fdcff1a990b8669af420c54872d5acfeae20e SHA-256: 478736b6f391e767d7d4783c6ae0c4a13122fc4cd6ba4dec9aa5197d767c259d

134 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9968

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
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://pistant.ru/uplcv?utm_term=how+to+name+a+horse+minecraft PDF link annotation
- http://uni-farm.pl/ckfinder/userfiles/files/26827935430.pdfIn PDF document text
- http://tcyy88.com/userfiles/file/2021091418253973499.pdfIn PDF document text
- http://www.mamafoundation.cz/ckfinder/userfiles/files/redofisipi.pdfIn PDF document text
- https://szamitogep-szerviz-javitas.hu/ckfinder/userfiles/files/wajibakugobimexinajebozid.pdfIn PDF document text
- http://cyklo-sport-servis.cz/UserFiles/File/94393857087.pdfIn PDF document text
- https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/1616054fe43626---14786075046.pdfIn PDF document text
- https://ntct-dz.com/ckfinder/userfiles/files/19282295483.pdfIn PDF document text
- http://dioceseofniranam.org/userfiles/file/65735098801.pdfIn PDF document text
- http://galsabino.it/userfiles/files/52853499938.pdfIn PDF document text
- http://mopi.eu/ckfinder/userfiles/files/kofavufo.pdfIn PDF document text
- http://hokkaido-love87.com/app/webroot/js/ckfinder/userfiles/files/37940295935.pdfIn PDF document text
- https://madeinstlucia.com/userfiles/files/92210930197.pdfIn PDF document text
- https://yam-token.com/business_school/uploads/file/raberejejebajivitijome.pdfIn PDF document text
- https://cihangirhotel.com/upload/ckfinder/files/64869254271.pdfIn PDF document text
- http://andreevka.topmebli.com/content/xuploadimages/file/95172598669.pdfIn PDF document text
- https://thebottombillion.org/business_school/uploads/file/nuxededulosa.pdfIn PDF document text
- http://ahrestygz.com/userfiles/files/20210902_131523.pdfIn PDF document text
- http://ankaser.com/userfiles/file/68827781389.pdfIn PDF document text
- https://fishboat.hr/files/78327027504.pdfIn PDF document text
- http://nassagroup.org/app/webroot/js/ckfinder/userfiles/files/zojitaxowagizalekefilozig.pdfIn PDF document text
- http://cnpair.com/userfiles/file/19952416136.pdfIn PDF document text
- https://el-tall.pl/pics/file/zemopokowipipujaput.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.netReferenced by PDF JavaScript
- http://dejavu.sourceforge.net/wiki/index.php/LicenseReferenced by PDF JavaScript

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d4bb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD4BB	10632 bytes
SHA-256: `7fbf226033334a425025a982b7ca6cc293d5bec8021b45ecf46795feaf354df2`
`font_01_sfnt_off0000ece0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xECE0	18484 bytes
SHA-256: `91714c58444ee6002021c442404443b52ad530361d797fd05ec327d81b45a708`
`font_02_sfnt_off00011beb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11BEB	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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