Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8ddae25ae46e45…

MALICIOUS

PDF

80.2 KB Created: 2021-10-16 18:46:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 1b5ad29dd1974a17a44bc06443f1046e SHA-1: 31b0fe2e9d6d9a2a4b2dd2688c108b13c043ed8b SHA-256: aa8ddae25ae46e45d812bfca0b2ca3c1f6bd9c8de9217a13805b672d43f0fc17
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://synerhu.ru/uplcv?utm_term=an+angle+measuring+less+than+90+degrees PDF link annotation
    • https://polnische-zaune.de/userfiles/file/kokasi.pdfIn PDF document text
    • http://dubossari.es-pmr.com/constructor/dubossari/ckfinder/userfiles/files/kotejufatiwasiw.pdfIn PDF document text
    • https://dalycity.com/wysiwygfiles/file/vedebinivoda.pdfIn PDF document text
    • http://vallovin.it/userfiles/files/2472380808.pdfIn PDF document text
    • http://grandwatergatehotel.com/upfile_hotel/files/towutesurizagifimu.pdfIn PDF document text
    • http://panziofabian.hu/fck_kepek/zulifusafabe.pdfIn PDF document text
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16167ee399b031---95550447780.pdfIn PDF document text
    • http://chelseafoodmart.com/uploads/files/gufipirikevujasenirir.pdfIn PDF document text
    • http://aucontecnologia.com/userfiles/files/sefidobizevivef.pdfIn PDF document text
    • https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614071b936f5c---rofosetimawa.pdfIn PDF document text
    • http://beiwendq.com/data/attachment/file/27717491421.pdfIn PDF document text
    • http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/161611383733ca---23766131200.pdfIn PDF document text
    • https://newdesert.pl/userfiles/file/30028107882.pdfIn PDF document text
    • https://cherrychile.cl/cherry/uploads/contenido/files/39666979023.pdfIn PDF document text
    • http://boekenwinkelindex.nl/images/uploads/wibifutegolutiz.pdfIn PDF document text
    • https://zohopinler.com/calisma2/files/uploads/gadagebemiworit.pdfIn PDF document text
    • http://tranindo.com/Uploads/userfiles/files/dilaboxikixev.pdfIn PDF document text
    • http://hflchw.com/upload/file/xololimedopubaga.pdfIn PDF document text
    • http://aotwresort.info/ckfinder/userfiles/files/gomevubaz.pdfIn PDF document text
    • http://perlawarmii.pl/userfiles/file/lobemonunu.pdfIn PDF document text
    • http://lamorenj.com/userfiles/files/zidinapeduvalisudomakexez.pdfIn PDF document text
    • http://offerparts.com/upload/files/27656088351.pdfIn PDF document text
    • https://ryokanclub.com/FileData/ckfinder/files/20210912_65675D8B36218BB9.pdfIn PDF document text
    • https://manuscripthandler.com/userfiles/file/gorufuguwarenenujuxarizad.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_off0000d426.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD426 10948 bytes
SHA-256: 30b380aa63a453c3f60cbaea28804f8113c8e6aef8bdab65009afa8979a92eda
font_01_sfnt_off0000ed29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED29 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001053b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1053B 17924 bytes
SHA-256: e2d3d6114f5dfad2964a73c44e723370c4088217421b37243ba625f14fa6f26b