Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd8a05fa1bcc8f8…

MALICIOUS

PDF

72.5 KB Created: 2021-09-02 02:34:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-25
MD5: 6f17b6784709243c7f30ff70bab52405 SHA-1: 141afda661df2ac2717d3234ed1f6cc6c4143247 SHA-256: 3dd8a05fa1bcc8f8c990197ff1976ed7b87db61f5eb616c00e7f56dadeac89db
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/160caebc88a840---lasogu.pdf In PDF document text
    • http://nuraski.pl/wsg/userfiles/fogexopupujasalatud.pdfIn PDF document text
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/1815eb033a424ee7c6ec96070c3dc6f3/15876504781.pdfIn PDF document text
    • http://rfamilylucas.com/clients/73238/File/woredojokinorojejiji.pdfIn PDF document text
    • http://gps-ambroisie.com/ressource/site-image/files/vunus.pdfIn PDF document text
    • http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16072f0325c5a5---25279123915.pdfIn PDF document text
    • http://aahsclassof1978.com/clients/b/b6/b6117739535924054831d33ecd54b00a/File/58874089360.pdfIn PDF document text
    • https://pablohernandes.com/wp-content/plugins/super-forms/uploads/php/files/f22eda6320032ce41391b00ec1d4be9f/86507772247.pdfIn PDF document text
    • http://kolaykanal.com/userfiles/files/pepolado.pdfIn PDF document text
    • http://muskogeeroughers1967.com/clients/9/98/9899c641331876fb313f08ec475a0443/File/kobozoreberogarupumok.pdfIn PDF document text
    • http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612dff33d50be---96412943496.pdfIn PDF document text
    • http://aotwresort.org/ckfinder/userfiles/files/59945920547.pdfIn PDF document text
    • http://2017.letnifestiwal.pl/ckfinder/userfiles/files/78643090337.pdfIn PDF document text
    • https://agrachoff.ru/wp-content/plugins/super-forms/uploads/php/files/887c6f4a5743e17e6ccdb18028668325/92630746321.pdfIn PDF document text
    • http://nhatrangpalace.vn/app/webroot/upload/files/ruvopoluvezuvawekimixol.pdfIn PDF document text
    • https://sardavetri.it/userfiles/file/4454481353.pdfIn PDF document text
    • https://www.hotelrestaurantmacarena.fr/ckfinder/userfiles/files/90593963539.pdfIn PDF document text
    • https://girl0229960192.com/upload/users/files/subefizotimajuvejafew.pdfIn PDF document text
    • http://hublihorse.com/uploads/userfiles/files/93260387701.pdfIn PDF document text
    • https://eyestech.in/wp-content/plugins/super-forms/uploads/php/files/v8irtp21mgnfgjpv0bj6u0jt72/4854136738.pdfIn PDF document text
    • https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e269aad444e---soxadakava.pdfIn PDF document text
    • https://arhstroi.by/uploads/files/nekepav.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=apply+for+naturalizationPDF link annotation
    • https://unimedbelem.com.br/painel_template/assets/global/plugins/ckfinder/userfilesfiles/gibixurewusejawufalot.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_off0000bbf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBF3 16172 bytes
SHA-256: eb64b1974af3d9cb15d324fee323fe2d37ef681325ac0a953533016a4b2f6a2d
font_01_sfnt_off0000e4fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4FA 10304 bytes
SHA-256: ac715533d2372ec45a715a4bf0635d5d2a49d63fff96faf5e6fbdb1b9c378763
font_02_sfnt_off0000fc59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC59 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1