Malicious PDF — malware analysis report

Static analysis result for SHA-256 7933cb99f0b64398…

MALICIOUS

PDF

215.4 KB Created: 2022-02-16 10:05:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 0509aeb296a715517b1bf0b43e35ed2a SHA-1: 76a385d77842997f21416cbb2d4e298db81ed343 SHA-256: 7933cb99f0b64398282b39d4d7a8525074221cf6feec370e28a2a2f608f8ee52
142 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7499

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
  • 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.
  • 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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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://yoyep.co.za/XSRYdR1H?utm_term=casino+movie++free PDF link annotation
    • http://ahrestygz.com/userfiles/files/20210825_142613.pdfIn PDF document text
    • https://alirezamirmohammadi.com/images/upload/files/3079868989.pdfIn PDF document text
    • https://lederstuhl-shop.de/ckfinder/userfiles/files/41968126598.pdfIn PDF document text
    • http://namlinhchivietnam.net/userfiles/image/file/87566942951.pdfIn PDF document text
    • http://zkojicin.cz/userfiles/file/97459135644.pdfIn PDF document text
    • http://livelyway.com/ckfinder/userfiles/files/8486005686.pdfIn PDF document text
    • http://ugyvednok.hu/userfiles/file/didisofosobesilag.pdfIn PDF document text
    • http://hotnews.md/upload/userfiles/files/59338781057.pdfIn PDF document text
    • https://1am130r6h1n1-k11a7.com/contents/files/jubedelafa.pdfIn PDF document text
    • http://polimak.pl/userfiles/file/vuzodufosu.pdfIn PDF document text
    • http://hueide.com/upload/files/65778135455.pdfIn PDF document text
    • http://lotuscourtpune.com/wp-content/plugins/super-forms/uploads/php/files/a81d643247c9170fb8ac0a89198a3d2f/61407302563.pdfIn PDF document text
    • https://hagakure.by/upload/editor/files/sesujidakugez.pdfIn PDF document text
    • http://officinedesign.it/userfiles/files/14817950580.pdfIn PDF document text
    • https://divanich96.ru/admin/ckfinder/userfiles/files/79768367833.pdfIn PDF document text
    • http://studiogiovannone.com/userfiles/files/xesadexis.pdfIn PDF document text
    • http://zhihepvb.com/upload/ckimg/files/202108221047037832.pdfIn PDF document text
    • https://igmof.com/admin/js/kcfinder/upload/files/viguwewulukinimibep.pdfIn PDF document text
    • http://zulassungsdienst4you.de/bilder/file/83306008405.pdfIn PDF document text
    • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/16191684422b6c---43328283406.pdfIn PDF document text
    • http://www.saletime.gr/admin/fckfiles/file/44714953320.pdfIn PDF document text
    • https://skywaynepal.com/userfiles/file/sanoxatorotegodagigubor.pdfIn PDF document text
    • https://apexforestservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/161bfa85bcd180---tuwapulemi.pdfIn PDF document text
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/161e0abe582a18---22821263614.pdfIn PDF document text
    • http://familie-schiecke.de/images/file/kamabo.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.

FilenameKindSourceSize
font_00_sfnt_off0002ee50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EE50 10328 bytes
SHA-256: 80d8d7b13d17fd9f55e80508c145c0e8350213e815eeb1ed8038432476914acf
font_01_sfnt_off0003059a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3059A 18980 bytes
SHA-256: 954fa32e88e4f2954f69f8e6a41283d33207e5c81da75d8592dc2af0c2c9deb8
font_02_sfnt_off00033748.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33748 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9