Malicious PDF — malware analysis report

Static analysis result for SHA-256 4788d0bb39172d80…

MALICIOUS

PDF

323.4 KB Created: 2022-04-05 12:21:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-20
MD5: 6fdcd61c5a5d90c1b385f05412615873 SHA-1: 4339366a77533e3d6107cc22434e0c7331e0813a SHA-256: 4788d0bb39172d8054d09230f8db6baed9a4efd12b5fdbd84a1d6444a088d0d1
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6934

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • 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=how+to+spawn+bronto+platform+saddle PDF link annotation
    • http://www.alm-machines.be/kcfinder/upload/files/1040745578.pdfIn PDF document text
    • https://zejoraxiziras.weebly.com/uploads/1/3/5/3/135315695/sotepis.pdfIn PDF document text
    • http://thaimassageboy.com/ckfinder/userfiles/files/rajepuromirobux.pdfIn PDF document text
    • https://niboparis.com/upload/fckeditor/file/1649022655_1.pdfIn PDF document text
    • https://supratrend.hu/images/fck/files/96967534467.pdfIn PDF document text
    • https://zasawebisev.weebly.com/uploads/1/3/4/8/134865024/6998518.pdfIn PDF document text
    • http://www.korsun.ic.ck.ua/js/kcfinder/upload/files/22711191442.pdfIn PDF document text
    • http://www.procuradoresgipuzkoa.com/js/ckeditor/kcfinder/upload/files/89507475405.pdfIn PDF document text
    • http://giahung.tincorner.com/uploads/files/53799511929.pdfIn PDF document text
    • http://rayhovietnam.vn/upload/files/guxunarukomimivenujotadif.pdfIn PDF document text
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/1620c876eb2b44---65657367927.pdfIn PDF document text
    • http://biondiairsystem.it/userfiles/files/3191483352.pdfIn PDF document text
    • http://www.puhito.hu/uploads/19521978124.pdfIn PDF document text
    • http://rajskiewakacje.pl/userfiles/file/16273966619.pdfIn PDF document text
    • https://rentcar888.com/uploads/files/202203100912522256.pdfIn PDF document text
    • http://ncteonline.com/userfiles/file/nerifumiwipukowe.pdfIn PDF document text
    • https://nuevocoach.co.uk/wp-content/plugins/super-forms/uploads/php/files/77ae4a2b53424568ceae7a834cfe6efe/dituzivozigizigej.pdfIn PDF document text
    • https://kukonite.weebly.com/uploads/1/3/4/6/134611202/vipufeze.pdfIn PDF document text
    • http://vandofigueiredo.com/userfiles/file///83433834727.pdfIn PDF document text
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/162209ea57036a---26636511810.pdfIn PDF document text
    • https://jasmijnbloemengroen.nl/userfiles/file/guridaxegorevofu.pdfIn PDF document text
    • http://afksport.cz/upload/files/vivifeleniponavu.pdfIn PDF document text
    • https://kpardubice.cz/upload/files/jefurofuxujimizoradawafiz.pdfIn PDF document text
    • https://www.lindopoint.it/wp-content/plugins/super-forms/uploads/php/files/85b0ae59d23f72fccf236677ecd68503/gonozipizegokizelet.pdfIn PDF document text
    • https://vmwarts.com/ecovic/file/4842568577.pdfIn PDF document text
    • http://komornikstargard.com/userfiles/file/85552344422.pdfIn PDF document text
    • https://zupitexugavasol.weebly.com/uploads/1/3/0/9/130969618/nupakasisapogopu.pdfIn PDF document text
    • https://queeneskuvo.hu/adminfiles/files/54266655004.pdfIn PDF document text
    • http://ags-sib.ru/ckfinder/userfiles/files/45135652077.pdfIn PDF document text
    • http://uraldutyfree.com/uploads/files/jiputof.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.

FilenameKindSourceSize
font_00_sfnt_off00049ca3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49CA3 18968 bytes
SHA-256: 09069ea8a0fa024cc3531cc9ff493cc11694826a0a13e9b1830bca91b0212b13
font_01_sfnt_off0004cd72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CD72 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0004e589.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E589 10784 bytes
SHA-256: 3a9a13d438db76457abffefd7f284b6adb8850feb99641fd7f2c40cf44e86a62