Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d98fdfd3ec3cc7…

MALICIOUS

PDF

74.2 KB Created: 2022-04-07 11:06:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: ef8864de258fe8dba981e225749c33ef SHA-1: b83e43d6eb42ce4385ef9f9f3250b560d8acca65 SHA-256: c5d98fdfd3ec3cc711915cdd3a4901a4e42ec4f689657adf742064dadc09763d
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/YmrXLWy8?keyword=how%20to%20use%20data%20analysis%20toolpak PDF link annotation
    • https://sudahhabis.com/contents/files/gakimipamonaduregikajo.pdfIn PDF document text
    • https://nogekapufininut.weebly.com/uploads/1/3/3/9/133997605/digowiwigakox_tiwapoxo_firun_dorasijilawaz.pdfIn PDF document text
    • https://doellefjelde-mussemarked.dk/images/newsmail/file/ruvidure.pdfIn PDF document text
    • https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/c540c46f6961311c2412f57f3bda73ae/mudebawaxevumalejisujo.pdfIn PDF document text
    • https://springkasteelhuren.be/userfiles/file/dekelubenosiba.pdfIn PDF document text
    • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1621a83fc6c067---63128577406.pdfIn PDF document text
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1623305940e7b1---wabotuxukosigaboginudunow.pdfIn PDF document text
    • https://kudamatsu.org/userfiles/file/6768969393.pdfIn PDF document text
    • http://ieltsadd.ir/cache/fck_files/file/61921729288.pdfIn PDF document text
    • http://manhchenang.vn/webroot/img/files/88344958782.pdfIn PDF document text
    • http://zsmnowakowski.pl/userfiles/file/puzegenogilakokisi.pdfIn PDF document text
    • http://vattucongtrinh.com/userfiles/file/kezudimofebe.pdfIn PDF document text
    • http://uslugi-ogrodnicze.pl/pliki/File/20445771229.pdfIn PDF document text
    • http://esoftland.com/userfiles/file/69719960558.pdfIn PDF document text
    • https://kodanefonilulev.weebly.com/uploads/1/3/4/7/134702772/sukisuwagukebajubule.pdfIn PDF document text
    • https://snoman.mb.ca/ckfinder/userfiles/files/50354011721.pdfIn PDF document text
    • http://homeopathyhk.com/files/38527674917.pdfIn PDF document text
    • http://ubytovani-budejovice.cz/picture/vtextu/file/65261207331.pdfIn PDF document text
    • https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/ba973843e0b5016cd4ee2317612e57ad/64112879065.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_off0000bd67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD67 10668 bytes
SHA-256: f19912b8e0dfacc887f1681de78c26ebd07b03cd7e573a13a4516d3ab0a41427
font_01_sfnt_off0000d601.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD601 17276 bytes
SHA-256: 4bcbb09e93bcc14988094a6eec5ac5a7b8329129aec924fd8d5f689808b3cd14
font_02_sfnt_off00010338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10338 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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