Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2ca53bc53847c8…

MALICIOUS

PDF

83.2 KB Created: 2021-09-05 07:00:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: dd44b0d56020aff606f905361dc0c4f7 SHA-1: ea98dc39f337e558df7ea34dd295a00e1bfc6907 SHA-256: af2ca53bc53847c83b7c6fe07cffb6320c1a84d78047a845b197abeaa48541df
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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 http://rayer.cn/d/files/88757666327.pdf In PDF document text
    • http://centonze-vini.com/userfiles/files/mulidumokosinurozes.pdfIn PDF document text
    • http://bclgrouptt.com/userfiles/file/muwakomibomevazuxa.pdfIn PDF document text
    • http://casier-a-bouteilles.fr/file/panavabebobomefepapif.pdfIn PDF document text
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/160a995230ef28---balakoruxud.pdfIn PDF document text
    • https://atlanthealth.com/wp-content/plugins/super-forms/uploads/php/files/6add2e11374fe37a61be21d5e0a446ac/68849913028.pdfIn PDF document text
    • https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/161283e367138f---fabaxolema.pdfIn PDF document text
    • http://queensparkview.com/image/upload/File/76101563667.pdfIn PDF document text
    • https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16110198f54e0f---76406221538.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608239cef303b---makabubopezebalatatawu.pdfIn PDF document text
    • http://joewhitefamilysite.com/clients/59967/File/jutafufuwu.pdfIn PDF document text
    • http://restravel.ru/ckfinder/userfiles/files/2161968441.pdfIn PDF document text
    • http://highendschmiede.de/highendfiles/file/78456984545.pdfIn PDF document text
    • https://avenue102.com/uploads/file/panorevekabi.pdfIn PDF document text
    • http://sjar-tech.com/uploadfile/file///2021052820152913.pdfIn PDF document text
    • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/b4ff2dc591a8eb3d33d99903f70db857/67995599707.pdfIn PDF document text
    • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/ae81252f60240661a39733b5292dd5f4/17241823349.pdfIn PDF document text
    • https://homini.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16084f19b93468---62208113075.pdfIn PDF document text
    • https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/4b553b786b374701bec4974993232d93/94692570938.pdfIn PDF document text
    • http://goodwill.pl/userfiles/file/39052094431.pdfIn PDF document text
    • http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b207608e145---kuzerivexopigizum.pdfIn PDF document text
    • https://golf-tout-terrain.com/publish/page/file/37331029279.pdfIn PDF document text
    • http://influences-vegetales.eu/assets/Image/files/15739395512.pdfIn PDF document text
    • http://hesexpo.com/img/editor/image/file/48071639493.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=leadership+assessment+questionnaire+pdfPDF link annotation
    • 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_off0000e037.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE037 17736 bytes
SHA-256: af3a3dbe5462b9fd8554b645bb90461bbf8bd7009f31df70cb83a8291943405e
font_01_sfnt_off00010e12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E12 10920 bytes
SHA-256: e0087aa664777e9f562ff590177511c57030dfdcd149c7cab418cab25eaa1ed0
font_02_sfnt_off000126ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126ED 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1