Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af46e8381aee0e5…

MALICIOUS

PDF

350.4 KB Created: 2022-04-23 11:22:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 18153f8a8209c30cfb56b532eb0340c8 SHA-1: 898df1bd512b4f446f7243258c45087e441bd098 SHA-256: 4af46e8381aee0e5b7f7d1022c80cd16856d2dd3f50ed7df6079e1d920806cb3
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7724

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://sunuf.co.za/XSRYdR1H?utm_term=boom+beach+hack+apk+private+server PDF link annotation
    • https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/db0de3cebef9b2f3d6f85a5eb0a18842/91871210028.pdfIn PDF document text
    • http://dharkaninternational.com/survey/userfiles/files/jekomovazuxogekukuwusore.pdfIn PDF document text
    • http://sladkiy-ostrov.ru/userfiles/files/jedaferogarapifojutavob.pdfIn PDF document text
    • https://bivixogerixud.weebly.com/uploads/1/3/4/4/134469213/1b50a50.pdfIn PDF document text
    • https://www.sinditamaraty.org.br/site/public/ckeditor/kcfinder/upload/files/tidamum.pdfIn PDF document text
    • https://sajowomifekorur.weebly.com/uploads/1/3/4/3/134314212/fapuf-zifufeba.pdfIn PDF document text
    • https://www.azulejositurry.com/wp-content/plugins/super-forms/uploads/php/files/2ltj83q920br13ils5vh9ejv44/wiguponozudugigisiwaxumu.pdfIn PDF document text
    • http://kayseritupbebektedavisi.com/angora/userfiles/file/nafojad.pdfIn PDF document text
    • https://yourownadviser.com/ckfinder/userfiles/files/33606844467.pdfIn PDF document text
    • https://pamemigewoguvo.weebly.com/uploads/1/3/4/4/134438925/futotepazuwunuk_karinizodesudo_nematexopif.pdfIn PDF document text
    • https://fundacjacat.halpress.eu/userfiles/file/58200477197.pdfIn PDF document text
    • https://regasefes.weebly.com/uploads/1/3/1/8/131871592/7676654.pdfIn PDF document text
    • http://robertfeinberglaw.com/images/edit_images/file/83330695096.pdfIn PDF document text
    • http://delshadian.com/public/userfiles/file/lebojorunuvebitavobenaxu.pdfIn PDF document text
    • https://montferri.com/admin/js/plugins/kcfinder/upload/files/59010327761.pdfIn PDF document text
    • https://wazasamiv.weebly.com/uploads/1/3/0/7/130775889/8936892.pdfIn PDF document text
    • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/162609e1d529ad---fogipunekaronex.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/16227c10272315---sisozezo.pdfIn PDF document text
    • https://bujubemido.weebly.com/uploads/1/3/0/7/130776032/fepifi_vusinudarila.pdfIn PDF document text
    • https://solusolifodijal.weebly.com/uploads/1/3/4/4/134433047/jupeg-wuwijuf-mixizudufus-fufiwinopimi.pdfIn PDF document text
    • http://www.biosafety.biz/ckfinder/userfiles/files/71508940151.pdfIn PDF document text
    • https://explonorte.com/admin/files/files/keginemage.pdfIn PDF document text
    • https://onecre.com/images/content/files/8267357756.pdfIn PDF document text
    • http://tsuyopillar.com/assets/kcfinder/upload/files/43992123241.pdfIn PDF document text
    • https://expomediainc.com/upload/file/80779682647.pdfIn PDF document text
    • https://rukegimamu.weebly.com/uploads/1/3/3/9/133986924/devomu.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_off00050be5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50BE5 10840 bytes
SHA-256: 368867ae036a77b8cfbafe86c1647e1d64c1654887860188c2419d368c81461d
font_01_sfnt_off000524ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x524CA 17596 bytes
SHA-256: 7ad9c7cce4692b6f3a19af70e33f7027011d817c0768312667e42d23a94299db
font_02_sfnt_off00055272.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55272 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1