Malicious PDF — malware analysis report

Static analysis result for SHA-256 4456609e735217d0…

MALICIOUS

PDF

423.5 KB Created: 2022-05-01 06:48:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-07
MD5: bac75a29fca1538003fe74a8ef772891 SHA-1: a4a5d8c22d73e32beb1b24320cf90366a1e53287 SHA-256: 4456609e735217d010054664790fb845764cf9f0f71def7a1f201a915c30b465
182 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5599

Heuristics 8

  • 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.
  • 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=arithmetic+by+rakesh+yadav+pdf+free PDF link annotation
    • https://karpzbeldowa.pl/uploads/userfiles/files/laraxa.pdfIn PDF document text
    • http://ebooksweb.net/files/file/59402119949.pdfIn PDF document text
    • http://davostravel.com/upload/files/povopowefopuwila.pdfIn PDF document text
    • http://emilybarnes.com/DEVELOPMENT/VERSIONED/emilybarnes/trunk/sites/default/files/file/40305301251.pdfIn PDF document text
    • https://rubenoferro.com/userfiles/file/6132073356.pdfIn PDF document text
    • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/162347fc17e4fc---narixirufuza.pdfIn PDF document text
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1626a1124c3698---didemo.pdfIn PDF document text
    • https://supratrend.hu/images/fck/files/waxeleri.pdfIn PDF document text
    • http://bellina.pl/userfiles/file/zalirabodakavuxina.pdfIn PDF document text
    • http://spineportal.de/files/file/6773016088.pdfIn PDF document text
    • https://thaiwoodengames.com/files/upload/files/91133600038.pdfIn PDF document text
    • http://rendszerguru.hu/admin/kcfinder/upload/files/44672757329.pdfIn PDF document text
    • https://incoyun.com/calisma2/files/uploads/53844442220.pdfIn PDF document text
    • http://maychamsocda.vn/images/userfiles/file/nosavojawawogina.pdfIn PDF document text
    • http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1626b61014dea0---20009401090.pdfIn PDF document text
    • https://hgb.se/filer/file/56543092171.pdfIn PDF document text
    • https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/162218f7ea7253---73733054677.pdfIn PDF document text
    • https://www.barefoothoa.com/webroot/js/ckfinder/userfiles/files/zotavarodegerumow.pdfIn PDF document text
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/16204c3891dc27---jupezifanozaxovodefuwobe.pdfIn PDF document text
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/6ut0klljnn6mpqc6sp7hrntiu2/fozobowododimojeveg.pdfIn PDF document text
    • https://asiquim.com/ckfinder/userfiles/files/zitab.pdfIn PDF document text
    • http://sunnyten.net/userData/board/file/lipis.pdfIn PDF document text
    • http://belspelen.nl/admin/kcfinder/upload/files/72131254448.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/1624d6f3d3d1c1---1250340876.pdfIn PDF document text
    • https://gatia.kone-equicentrum.cz/userfiles/files/furawimupulakaneju.pdfIn PDF document text
    • http://exmar.it/foto_fck/file/14776724213.pdfIn PDF document text
    • https://kominove-centrum.cz/media/files/file/1877382785.pdfIn PDF document text
    • https://exam11.menapoint.com/app/webroot/upload/files/93131345309.pdfIn PDF document text
    • https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/8354b4826af4d13fe87d13a1ba5dce7b/88269274391.pdfIn PDF document text
    • https://ag-concept.ru/wp-content/plugins/super-forms/uploads/php/files/917c916a674bbd4ddcb5647546d0b2ea/17625857320.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_off00062525.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62525 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00063d3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63D3C 11008 bytes
SHA-256: 5127a49cfbbfd8eff552a502baca98611bd0279cd16b73bbbadf95ed2a39ecc3
font_02_sfnt_off000656b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x656B8 21668 bytes
SHA-256: e3f77fe3b5c7fa23b5d3d686ce26cd7b73fbf1a730ed75c4bdbeef6a7d196b8d