Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8ed6f543df0446…

MALICIOUS

PDF

362.2 KB Created: 2022-01-26 14:04:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: a5f7f733b9768ef644f5964fc4b8231a SHA-1: 3aaa5da22b72c58552312559dab6c5d9d4d3335e SHA-256: aa8ed6f543df0446e2cd3f1343ed6d0fe4033d232ab0501c28d40e3984435e12
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://yoyep.co.za/XSRYdR1H?utm_term=physics+kinematics+questions+and+answers+pdf PDF link annotation
    • https://quanticabtl.com/cms_2018_quantica/sgi_userfiles/userfiles/files/97181188881.pdfIn PDF document text
    • http://reklama-v-sochi.com/ckfinder/userfiles/files/68899495970.pdfIn PDF document text
    • http://facilitymanagementassociates.com/survey/userfiles/files/wirikanogekilulu.pdfIn PDF document text
    • http://arunimaflavours.com/userfiles/file/7417513084.pdfIn PDF document text
    • https://singhaniabrothersltd.com/ckeditor/ckfinder/userfiles/files/gafowunubepejekafoxap.pdfIn PDF document text
    • http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/161327f841a929---70185766699.pdfIn PDF document text
    • http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/c157c0450d4579184c9f8b55b77f5899/95346770726.pdfIn PDF document text
    • https://rafaela-motores.com/userfiles/file/jivepogoxatijijitem.pdfIn PDF document text
    • https://1877painters.com/FCKeditor/file/vopijokiweruxemuta.pdfIn PDF document text
    • https://blsautomation.com/ckfinder/userfiles/files/14277571303.pdfIn PDF document text
    • http://lhdrum.com/User_File/UpFile/file/20211015212355_eG9wYWp1bm90dXNldm9yaWxpemluZXRp.pdfIn PDF document text
    • http://le383.com/uploads/files/89425458726.pdfIn PDF document text
    • http://dolphinkorea.com/files/files/tarap.pdfIn PDF document text
    • https://epponline.com/mentorfinancial/page_images/file/32482920288.pdfIn PDF document text
    • http://xn----dtbsgbucafmmaf.xn--p1ai/servimages/editor/files/budemalubokekupoxi.pdfIn PDF document text
    • https://kuraniterbiye.com/resimler/files/7944130192.pdfIn PDF document text
    • http://nsfeed.com/_UploadFile/Images/file/66596658791.pdfIn PDF document text
    • http://retailcop.ca/files/48761996804.pdfIn PDF document text
    • https://dehayemek.net/upload/ckfinder/files/kufodapagobitoropujefije.pdfIn PDF document text
    • https://mimpidia.com/contents/files/16754650064.pdfIn PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614edd481298b---zuvunulivusifux.pdfIn PDF document text
    • http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613e3cd3b36f2---82286493464.pdfIn PDF document text
    • http://www.iharoskezmuvesek.hu/ckeditor/kcfinder/upload/files/49192386456.pdfIn PDF document text
    • https://www.veskom-slovakia.sk/gfx/administration/js/ckeditor/kcfinder/upload/files/39742692947.pdfIn PDF document text
    • http://studioarclab.eu/userfiles/files/zegefogulejewikig.pdfIn PDF document text
    • http://www.glutec.it/_admin/kcfinder/upload/files/xeduvosux.pdfIn PDF document text
    • https://ilexgold.com/app/webroot/files/userfiles/files/begowukamuges.pdfIn PDF document text
    • http://mrhobbscoffee.com/images/uploads/file/93185998022.pdfIn PDF document text
    • https://pontogliofrancesco.it/upload/user/monene.pdfIn PDF document text
    • https://abofahed.com/userfiles/file/witemuli.pdfIn PDF document text
    • https://5703n1n6999-6a55.com/contents/files/669220274.pdfIn PDF document text
    • http://conelser.hu/fck_uploads/file/rajivipijo.pdfIn PDF document text
    • http://zs.tom.ru/jsplugins/ckfinder/userfiles/files/mugufupodezokidivitoduki.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_off00053724.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53724 18292 bytes
SHA-256: a438c68b8d2e46793d5219427193016a239e18707775a6de03c2f9209f4d9dc0
font_01_sfnt_off00056797.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56797 11380 bytes
SHA-256: 175d409414265f346c4d8f874c56e26d232aac087306bbe6b989b18bb33e034a
font_02_sfnt_off00058223.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58223 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336