Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af513087e9baf23…

MALICIOUS

PDF

359.3 KB Created: 2022-02-02 21:30:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: e78d0adb5233f02108ec2653645f76aa SHA-1: 96cf0389064c4ba38a730814cd521dbd932d56e5 SHA-256: 4af513087e9baf2365eaa9ad5f681f7e0423ed767ce7baef62f6ce1b59dafa0e
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6641

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://ragaz.co.za/XSRYdR1H?utm_term=verbe+avoir+au+pass%C3%A9+simple+forme+negative PDF link annotation
    • https://33mobility.net/uploads/files/tepovanekemizizesone.pdfIn PDF document text
    • https://cmfnepal.org/userfiles/files/mukusepikowarawakewunugok.pdfIn PDF document text
    • http://gk-eventus.ru/admin/ckfinder/userfiles/files/17164305150.pdfIn PDF document text
    • https://ismet.com.br/ckfinder/userfiles/files/88808859508.pdfIn PDF document text
    • http://otpetye.com/images/shared/file/vozefubunekuwujoxiwami.pdfIn PDF document text
    • http://makairways.in/home/makairways2017/public_html/dowalumniusa/ckfinder/userfiles/files/nidamavano.pdfIn PDF document text
    • https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/4bc5a7b56bb5105e156eb28134698fa5/44555042593.pdfIn PDF document text
    • http://hkxhjfc.ltd/uploads/files/20211123004424.pdfIn PDF document text
    • http://strahyi.ru/images/file/38050340086.pdfIn PDF document text
    • http://yogo110.com/userfiles/file/lidugazewinovusasoluzuz.pdfIn PDF document text
    • http://gattoneva.pl/pages/userfiles/file/vozigadawawowaza.pdfIn PDF document text
    • http://chieucoingason.vn/files/zagibezabajusadetu.pdfIn PDF document text
    • https://soyana.de/js/ckfinder/userfiles/files/remejufiwosobuzixa.pdfIn PDF document text
    • http://swaving-stalinrichting.nl/ckfinder/userfiles/files/96133373319.pdfIn PDF document text
    • https://egyseg.eu/ckfinder/userfiles/files/wotawuxokuliz.pdfIn PDF document text
    • http://bydnjl.com/userfiles/files/84736893280.pdfIn PDF document text
    • http://bluecars.pl/userfiles/file/nekesabateperuwoterot.pdfIn PDF document text
    • http://ocung.net/img/files/rukikatoxojivoledut.pdfIn PDF document text
    • http://dc-0b9b12d700ad.collinite.pl/userfiles/file/65574284035.pdfIn PDF document text
    • http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613d3a61b22be---14790222098.pdfIn PDF document text
    • http://cocoal.com/uploads/file/41164492805.pdfIn PDF document text
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/161e69ac155a2b---waxasolunaperuvemupelonaj.pdfIn PDF document text
    • http://www.casopisfolklor.sk/assets/kcfinder/upload/files/rivobofelenebesoxon.pdfIn PDF document text
    • http://edv-denk.com/userfiles/file/93493834805.pdfIn PDF document text
    • http://thomas-zigon.de/images/file/35741025430.pdfIn PDF document text
    • http://rfaaa.com/UploadFile/file/20210810195659407.pdfIn PDF document text
    • http://vino-charlie.cz/userfiles/file/jakiberap.pdfIn PDF document text
    • http://ozdesignhouse.com/app/webroot/uploads/files/dixumuta.pdfIn PDF document text
    • http://dongphuctqueen.com/upload/files/12409151697.pdfIn PDF document text
    • https://m-astar.com/UserFiles/files/vabidufikonapar.pdfIn PDF document text
    • http://autoscuolavalerio.it/userfiles/files/luroxokolisub.pdfIn PDF document text
    • https://altaitur.com/ckfinder/userfiles/files/vaditiximasasuzurenosan.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_off00052ab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52AB7 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off000541d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x541D7 11132 bytes
SHA-256: 98cac407aa81a65dafe3a1b697e021b3f0d2a6eb02ea90ed45cde5222307d66f
font_02_sfnt_off00055b55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55B55 19284 bytes
SHA-256: 40a6efed1a73fd862e4f358e4e7bc59719580df18a98bfc202e450580dbc2964