Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b8820ba8aa3d6c4…

MALICIOUS

PDF

548.0 KB Created: 2022-04-26 12:47:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-26
MD5: 89ce9f4fbfaefd061ed5a646bf885eba SHA-1: e99052f6a244319adb3a1d3e1e7637967e19506e SHA-256: 4b8820ba8aa3d6c4b05ccddf93615265faac0d4ccb42111e8372808d8a3640d8
144 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.1954

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://podar.co.za/XSRYdR1H?utm_term=mod+games+app+store+apk PDF link annotation
    • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/162545eab5a92e---pazoxivoroguresiriwofada.pdfIn PDF document text
    • http://someteme.com/archivos/_20220211033756.pdfIn PDF document text
    • http://media-production.net/admin/ckfinder/userfiles/files/wudeviwiganivobula.pdfIn PDF document text
    • http://rockhouseschool.com/rockhouse/uploads/files/vibomopilugigutekoxil.pdfIn PDF document text
    • http://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/8861227ab94fd0e28c65f296cb128026/padovemafulamisigeputa.pdfIn PDF document text
    • https://lilafigofuku.weebly.com/uploads/1/3/1/3/131398347/kejofibazeferado.pdfIn PDF document text
    • http://nbc.ua/design/pic/file/xebesufuwaburakutinobob.pdfIn PDF document text
    • http://cityclick.it/userfiles/files/gomonepixumexatudevexibes.pdfIn PDF document text
    • https://evenements.gipso.org/ckfinder/userfiles/files/wazamomoginebesotakijusi.pdfIn PDF document text
    • http://franceplus.fr/userfiles/file/sinijuresifunowopipivizaj.pdfIn PDF document text
    • https://schneider-rozetki.ru/kcfinder/upload/files/kufiwigusopam.pdfIn PDF document text
    • https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/488cc1118b5c3683867a95cce7316f3a/fibomoxaxemiluja.pdfIn PDF document text
    • http://www.agenbenangbandung.net/file/25509850309.pdfIn PDF document text
    • https://pagelenabiruzet.weebly.com/uploads/1/3/4/4/134462778/8184002.pdfIn PDF document text
    • https://www.oabrn.org.br/2017/_ups/files/files/8234894254.pdfIn PDF document text
    • https://dichvuhappyhouse.com/upload/files/29839946122.pdfIn PDF document text
    • https://zazowabuk.weebly.com/uploads/1/3/4/6/134641257/xukuwenovofunulod.pdfIn PDF document text
    • https://generace89.cz/kcfinder/upload/files/53541591219.pdfIn PDF document text
    • https://zirakife.weebly.com/uploads/1/3/5/3/135316149/melavo.pdfIn PDF document text
    • https://zupevojug.weebly.com/uploads/1/3/0/7/130740492/3996465.pdfIn PDF document text
    • https://peretugi.weebly.com/uploads/1/3/0/7/130739140/3006b.pdfIn PDF document text
    • http://skomi.ru/img/files/file/83740043931.pdfIn PDF document text
    • https://lederstuhlshop.de/ckfinder/userfiles/files/65413446722.pdfIn PDF document text
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/1c2f86ce0f90dd8424b2a655f23afeda/valexaninusesexabif.pdfIn PDF document text
    • http://strap.sk/uploads/file/22446709955.pdfIn PDF document text
    • http://elturo.ru/img/upload/files/wupekesaxu.pdfIn PDF document text
    • http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/161ff6c7536b10---76947013983.pdfIn PDF document text
    • http://sydjpg.com/images/upload/file/20220414_213416_141.pdfIn PDF document text
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/1623f1101175db---vubolotijenipitawulet.pdfIn PDF document text
    • https://wolakorojufi.weebly.com/uploads/1/4/1/4/141473574/boligiwivozojopekob.pdfIn PDF document text
    • http://el-system.jp/uploads/2012/files/gimafulaxug.pdfIn PDF document text
    • http://grv.arq.br/admin/kcfinder/upload/files/kofelu.pdfIn PDF document text
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1620c03ddb8406---15246926836.pdfIn PDF document text
    • https://pomacanthe-art.fr/imagebeforeafter/files/vavugu.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_off0007fcb5.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0007fcb5.bin)

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0007fcb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FCB5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000814c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x814C2 1668 bytes
SHA-256: 0a4af374cb035e676210909e4790276a619635896d879aefac6ffd5912e9aefa
font_02_sfnt_off00081cb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81CB2 16092 bytes
SHA-256: 9d5144547e0b729630886a3ad3ce48e7da84b0115899dd9c2390406af6f0fecd
font_03_sfnt_off000831f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x831F9 20284 bytes
SHA-256: a62ebe924caea5daa6b5e9bbe458a1148270e4ea7c9c477e03957067ec54097f
font_04_sfnt_off000866c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x866C1 10580 bytes
SHA-256: dfeede69856ec3ebd6d70d016efe1745d2713e9eba5ea28d88cf9d67588f4d9c