Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4ffed755b6b8c67…

MALICIOUS

PDF

149.0 KB Created: 2021-12-01 09:31:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: fe3179bb143b6ec77b28ba2b84c0f946 SHA-1: e91cf8567dd6196772501757de5280305c696988 SHA-256: a4ffed755b6b8c67adf5e586857896cb0c4da82336f87469d2896e045bbac0f1
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9631

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://synerhu.ru/uplcv?utm_term=camino+de+santiago+frances+mapa+pdf PDF link annotation
    • https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/9cb800bcb5ee75017834d3aeecb1662a/54858316429.pdfIn PDF document text
    • http://coiffurenais.com/userfiles/file/78321607611.pdfIn PDF document text
    • http://library.nesdb.go.th/ic/admin/ckfinder/userfiles/files/gegobuwuw.pdfIn PDF document text
    • https://uetty.xyz/js/ckfinder/userfiles/files/63934477615.pdfIn PDF document text
    • http://inbond-cn.com/userfiles/file/17927364751.pdfIn PDF document text
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/161302c89ee91e---xozovugiwejubojunizeli.pdfIn PDF document text
    • http://www.perchegouet.com/ckfinder/userfiles/files/57673232105.pdfIn PDF document text
    • https://euro-m.si/web/dokumenti/file/79279078613.pdfIn PDF document text
    • http://egyptlance.com/userfiles/file/94517530892.pdfIn PDF document text
    • https://micsys.in/userfiles/file/20568811771.pdfIn PDF document text
    • http://membranekeyboard.pl/_data/file/venovarutanufojogup.pdfIn PDF document text
    • https://banderlogclub.ru/Files/file/49208747160.pdfIn PDF document text
    • http://open.ua/uploads/ckeditor/files/losefutanujazalejuvefu.pdfIn PDF document text
    • http://coomargroup.com/ckfinder/userfiles/files/pafivomodazaxesevetulisod.pdfIn PDF document text
    • http://isdoor.ru/uploads/files/81389419381.pdfIn PDF document text
    • http://cascinamana.it/userfiles/file/wowurif.pdfIn PDF document text
    • https://cafesca.info/ckfinder/userfiles/files/25496740632.pdfIn PDF document text
    • https://cosonnguyenthanh.vn/webroot/userfiles/files/19213700276.pdfIn PDF document text
    • http://nedvizhimost-v-sharm-el-sheikhe.ru/uploads/files/70088207851.pdfIn PDF document text
    • http://unitekinfostructures.com/userfiles/file/26476618488.pdfIn PDF document text
    • http://pnlestari.com/visitbali/image/files/71218800793.pdfIn PDF document text
    • http://hunting.kg/userfiles/file/4978033856.pdfIn PDF document text
    • http://vencedor.coop/images/admin/file/pixariliboruwaravunal.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 extracted file (font_00_sfnt_off0001e90b.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0001e90b.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001e90b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E90B 10948 bytes
SHA-256: 7fd4d2c0abec3768382fa3f1c6c141f294fdd5cdc0d61ad60243ef74bd37b9ee
font_01_sfnt_off00020233.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20233 16780 bytes
SHA-256: 3c41de23537dd8a2bc31fa522e699b59ec29b83f4fc5cf22793c3a4d1f281467
font_02_sfnt_off00022d4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22D4D 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336

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